Comparing suitcases and backpacks

Traveling has become a necessity in modern life for many people. But we usually don't plan well for it, waiting for the last minute to start looking for a suitcase. And there are plenty of options on the market, making it hard to select the right one.

We can be proactive and think in advance of the need rather than wait for the last moment and decide in a hurry.

It helps to ask ourselves about the properties our bag needs to have. What kind of material should it be made from? Each one has its own unique properties and use cases. Typically, an engineer won't continue unless they know they are building with the right material, because choosing a wrong one has consequences later.

For instance, normal fabric may look fine for few uses, but it is not meant for frequent use. It can tear apart, the bottom of the bag could be from cardboard that bends or even tears under heavy weight and the wheels easily break once the bag is pulled over less welcoming surfaces.

Most decisions involve with some kind of trafeoffs. For instance, the advantage of normal fabric could be that it is relatively lightweight compared to a more rugged suitcase. But it is also true that a material can be lightweight and durable at the same time. For instance, bike components now frequently use carbon, which fits this description well. Yet, using expensive materials may sometimes not be a good option, especially to price-sensitive buyers.

This means that the material can determine to a great extent the cost of the product. But this does not mean that when a product is expensive, it is guaranteed to be made of the best possible materials.

When a manufacturer mentions the name of a hybrid material, there is no simple way to understand how easy or hard this material is to obtain. This allows them to have a higher asking price, which may not necessarily be fair. A buyer chooses a bag according to the utility it brings, not according to its profitability for the seller.

Even when the material remains unknown, it still influences a property that is important to the frequent traveler—the weight they have to carry. It doesn't matter how sturdy the material is if the moving mechanism on the wheels is bad or the suitcase is seen as too heavy.

Another question a traveler can ask themselves is how much space they need to pack their luggage. If they want to carry more, they have to "pay" once for the weight of the things they pack and once for the larger suitcase that can accomodate them. The less things we pack, the lighter and faster we can travel.

How much compartments are needed? How many zippers are nice to have? How many wheels at the bottom of the suitcase? Do we need a separate compartment for a bottle of water on the side of the backpack? These are all important questions, because we can expect that the more material is dedicated to each of these separate needs, the heavier the final bag will eventually become. On the other side, a simple, elegant backpack made of few parts, having two zippers at most, may not need many dividers in the middle, which means that it is left with more space to pack content. If the traveler doesn't throw everything randomly inside, but in an organized way, they would be able to use the boundaries of the bag to their advantage.

Usuallly, body space of a suitcase or a backpack is given as three dimensions—width, height and depth. This can help us gauge how much content we could eventually pack inside, serving only as an orientation. It is always best to see in person how the available space is being used. We also know from the past that many manufacturers do not tend to give the most accurate values.

That said, we could collect data about various suitcases and backpacks and try to see which of them eventually signal about high utility. A traveler usually seeks maximal packing space at minimal weight and price. We could integrate this knowledge in the ranking of the products. Please, note that this will not take additional knowledge like the combination of materials used or the sturdiness/durability of the product.

Below are some existing models of suitcases and backpacks from various brands. Given are product name, body dimensions (width, height and depth in inches), weight in lbs and price in US dollars.

As a small note, we have to say that whenever dimensions were given in cm, they were converted to inches, whenever weight was given in kg, it was converted to lbs and whenever price was given in euro, it was converted to US dollar. For consistency, all products were included with their usual prices in attempt to neglect the effect of possible discounts. Still, it is quite possible that you see many of these products having a reduced price.

suitcases = """ Samsonite Spettro 20" Spinner, 20.0, 14.5, 9.0, 7.43, 280 Samsonite Spettro 25" Spinner, 24.8, 17.25, 12.0, 10.36, 320 Samsonite Spettro 29" Spinner, 28.8, 20.0, 13.25, 11.6, 360 Samsonite Mid-Century Modern Limited Edition 21" Spinner, 21.0, 14.5, 10.0, 8.4, 340 Samsonite Mid-Century Modern Limited Edition Medium Glider, 22.0, 20.0, 11.25, 9.0, 400 Samsonite Novaire 20" Spinner, 19.75, 14.75, 9.0, 7.2, 310 Samsonite Novaire 28" Spinner, 27.5, 19.5, 12.0, 10.5, 350 Samsonite Novaire 30" Spinner, 29.75, 20.75, 13.0, 11.2, 390 Samsonite Leverage LTE 20" Spinner, 20.0, 14.5, 8.0, 8.0, 230 Samsonite Leverage LTE 25" Spinner, 24.5, 17.75, 9.5, 9.8, 270 Samsonite Leverage LTE 29" Spinner, 29.0, 20.25, 11.0, 10.8, 310 Samsonite Memphis Spinner 55/20, 21.7, 15.7, 8.7, 5.5, 340 Samsonite Memphis Spinner 67/24, 24.0, 18.5, 10.2, 7.3, 380 Samsonite Memphis Spinner 78/29, 29.0, 19.7, 11.8, 8.6, 430 Samsonite Eco-Nu 20" Expandable Spinner, 20.0, 15.0, 8.0, 6.94, 220 Samsonite Eco-Nu 25" Expandable Spinner, 25.25, 18.0, 9.5, 8.59, 260 Samsonite Eco-Nu 29" Expandable Spinner, 29.75, 20.0, 11.0, 11.2, 300 Samsonite Centric 20" Spinner, 19.6, 14.75, 9.1, 7.5, 180 Samsonite Centric 24" Spinner, 24.0, 16.5, 11.0, 9.0, 220 Samsonite Centric 28" Spinner, 27.75, 19.6, 12.5, 10.8, 240 Samsonite Tru-Frame Collection 25" Spinner, 24.0, 16.75, 11.0, 9.3, 470 Samsonite Tru-Frame Collection 20" Spinner, 19.0, 14.0, 9.25, 7.5, 430 Samsonite Novus 29" Spinner, 28.0, 21.6, 12.5, 9.9, 270 Samsonite Novus 20" Spinner, 19.0, 14.9, 9.8, 5.73, 190 Samsonite Novus 25" Spinner, 24.0, 18.8, 11.8, 7.9, 230 Samsonite Winfield 2 Fashion 20" Spinner, 20.0, 13.5, 9.5, 6.7, 200 Samsonite Pivot 29" Spinner, 28.5, 20.0, 13.25, 11.02, 260 Samsonite Pivot 25" Spinner, 24.75, 17.0, 12.0, 8.49, 230 Samsonite Pivot 20" Spinner, 19.75, 14.25, 10.0, 6.45, 190 Samsonite Momentum 20" Hardside Spinner, 19.0, 14.5, 9.25, 5.9, 200 Samsonite Uplite 29" Spinner, 27.76, 18.9, 12.2, 6.19, 290 Samsonite Uplite 24" Spinner, 25.0, 16.73, 8.46, 5.24, 250 Samsonite Uplite 20" Spinner, 19.57, 13.39, 7.2, 4.27, 210 Samsonite Arq 28" Spinner, 28.0, 19.3, 13.4, 10.1, 490 Samsonite Arq 25" Spinner, 25.0, 18.5, 11.8, 9.5, 430 Samsonite Arq 20" Spinner, 20.0, 13.8, 9.8, 6.6, 370 Samsonite Carbon 2 28" Spinner, 28.0, 19.0, 12.0, 10.8, 230 Samsonite Carbon 2 20" Spinner, 19.5, 14.0, 9.25, 6.6, 160 Samsonite Fiero 28" Spinner, 28.0, 20.0, 13.0, 11.3, 240 Samsonite Carbon 2 24" Spinner, 24.0, 17.0, 11.0, 8.15, 200 Samsonite Fiero 20" Spinner, 19.5, 14.5, 9.0, 7.5, 180 Samsonite Fiero 24" Spinner, 24.0, 17.5, 10.75, 9.2, 220 Samsonite Lift 2 25" Spinner, 25.0, 18.0, 9.5, 8.5, 260 Samsonite Freeform 21" Spinner, 19.5, 14.5, 10.0, 6.5, 300 Samsonite Freeform 28" Spinner, 27.6, 20.0, 13.0, 9.59, 300 Samsonite Lift 2 29" Spinner, 30.0, 20.0, 11.0, 10.0, 300 Samsonite Freeform 24" Spinner, 24.0, 18.0, 11.5, 8.48, 340 Samsonite Lift 2 21" Spinner, 21.0, 15.0, 8.0, 6.5, 220 Samsonite Tru-Frame Collection 20" Spinner, 19.0, 14.0, 9.25, 7.5, 430 Samsonite Tru-Frame Collection 28" Spinner, 27.5, 19.0, 11.5, 11.1, 510 Samsonite Tru-Frame Collection 25" Spinner, 24.0, 16.75, 11.0, 9.3, 470 Samsonite Winfield 2 Fashion 28" Spinner, 28.0, 19.75, 12.5, 11.5, 270 Samsonite Aspire XLite 20" Spinner, 20.5, 13.5, 8.5, 7.5, 160 Samsonite Inova 28" Spinner, 27.75, 20.0, 11.0, 9.46, 350 Samsonite Winfield 2 Fashion 24" Spinner, 24.0, 16.5, 11.0, 9.3, 240 Samsonite NeoPulse 30" Spinner, 30.5, 20.5, 11.5, 8.2, 450 Samsonite Aspire XLite 25" Spinner, 24.5, 16.25, 9.0, 9.5, 200 Samsonite Mightlight 2 30" Spinner, 30.5, 20.0, 11.0, 9.3, 360 Samsonite NeoPulse 28" Spinner, 28.0, 19.0, 11.0, 6.8, 400 Samsonite Mightlight 2 25" Spinner, 25.5, 18.0, 9.5, 8.0, 320 Samsonite Mightlight 2 21" Spinner, 21.0, 15.0, 8.3, 6.0, 270 Samsonite Cruisair DLX 30" Spinner, 30.0, 20.0, 12.0, 13.4, 300 Samsonite Silhouette XV Duet Voyage Garment Bag, 22.5, 22.0, 10.0, 12.9, 440 Samsonite Inova 30" Spinner, 30.0, 21.25, 12.0, 11.44, 390 Samsonite Black Label Lite-Shock 30" Spinner, 31.89, 21.65, 12.99, 6.2, 600 Samsonite Silhouette XV 25" Spinner, 25.25, 18.0, 9.5, 10.9, 300 Samsonite Inova 20" Spinner, 20.0, 15.0, 7.5, 5.94, 310 Samsonite Black Label Lite-Shock 28" Spinner, 29.53, 20.28, 12.2, 5.5, 550 Samsonite Stryde Glider Medium Journey, 22.0, 20.0, 11.0, 10.4, 350 Samsonite Mightlight 2 19" Spinner, 19.0, 15.0, 8.3, 5.8, 240 Samsonite Black Label Cosmolite 3.0 20" Spinner, 19.6, 15.7, 7.8, 3.7, 450 Samsonite Cruisair DLX 21" Spinner, 21.0, 14.5, 9.5, 9.0, 310 Samsonite Silhouette XV 29" Spinner, 29.5, 21.0, 11.0, 12.7, 420 Samsonite NeoPulse 20" Spinner, 20.3, 14.75, 7.5, 4.9, 360 Samsonite Aspire XLite 29" Spinner, 29.0, 18.5, 11.5, 11.5, 240 Samsonite Silhouette XV 21" Spinner, 21.0, 15.0, 8.5, 8.7, 310 Samsonite Stryde Glider Long Journey, 24.25, 22.25, 13.0, 11.2, 390 Samsonite Silhouette XV 19" Spinner, 19.0, 13.0, 7.75, 8.0, 300 Samsonite Silhouette XV 26" Hardside Spinner, 25.5, 17.0, 12.0, 11.0, 400 Samsonite Silhouette XV 21" Hardside Spinner, 21.0, 14.5, 10.0, 8.4, 340 Samsonite Black Label Lite-Cube DLX 31" Spinner, 30.2, 21.4, 13.5, 7.9, 700 Samsonite Silhouette XV Spinner Boarding Bag, 17.0, 14.0, 7.75, 7.8, 270 Samsonite Silhouette XV 30" Hardside Spinner, 29.5, 20.0, 13.75, 12.4, 440 Samsonite Silhouette XV Large Glider, 25.0, 22.0, 12.0, 12.1, 440 Samsonite Silhouette XV Medium Glider, 22.0, 20.0, 10.0, 10.2, 400 Samsonite Firelite 28" Spinner, 28.0, 19.5, 11.0, 6.68, 550 Samsonite Firelite 30" Spinner, 30.0, 21.0, 12.5, 7.061, 600 Samsonite Firelite 25" Spinner, 25.0, 19.09, 11.0, 5.5, 500 Samsonite Firelite 20" Spinner, 20.5, 14.5, 7.5, 4.442, 450 Samsonite Elevation Xtreme 29" Spinner, 30.0, 20.0, 11.0, 11.9, 270 Samsonite On Air 2 Hardside 29" Spinner, 29.0, 20.0, 14.0, 11.4, 340 Samsonite Elevation Xtreme 25" Spinner, 25.0, 18.0, 9.5, 10.3, 230 Samsonite On Air 2 Hardside 25" Spinner, 25.5, 17.5, 12.0, 9.1, 300 Samsonite Elevation Xtreme 21" Spinner, 21.5, 14.5, 8.0, 8.4, 190 Samsonite Valor 2 Piece Set, 28.0, 20.0, 12.25, 18.85, 360 TravelPro Maxlite® 5 Carry-On Rolling Garment Bag, 14, 21.75, 8.5, 8.3, 189.99 TravelPro Maxlite® 5 21" Expandable Carry-On Spinner, 21, 14, 9, 5.4, 139.99 TravelPro Maxlite® 5 22" Expandable Carry-On Rollaboard®, 21, 14, 9, 5.4, 129.99 TravelPro Maxlite® 5 International Expandable Carry-On Rollaboard®, 20, 15, 7.75, 5.4, 129.99 TravelPro Maxlite® 5 Carry-On Rolling Tote, 13.75, 16, 8.5, 5.4, 99.99 TravelPro Maxlite® 5 21" Expandable Carry-On Spinner, 21, 14, 9, 5.4, 139.99 TravelPro Maxlite® 5 Bi-Fold Hanging Garment Bag, 22, 22, 7, 3.9, 99.99 TravelPro Maxlite® 5 Soft Tote, 11, 18, 8, 1.6, 69.99 TravelPro Maxlite® 5 Rolling Underseat Carry-On, 15.25, 13, 8, 5.5, 119.99 TravelPro Maxlite® 5 Carry-On Rolling Duffel, 20, 12, 10, 4.4, 119.99 TravelPro CREW™ 11 CARRY-ON SMART DUFFLE W/ SUITER, 13, 22, 9, 3.2, 199.99 TravelPro Platinum® Magna™ 2 Bi-Fold Hanging Garment Bag, 22, 20, 7, 5.6, 249.99 TravelPro Platinum® Magna™ 2 21" Expandable Spinner Suiter, 21, 14, 9, 7.9, 299.99 TravelPro Platinum® Magna™ 2 22" Expandable Rollaboard® Suiter, 21, 14, 9, 7.7, 289.99 TravelPro Platinum® Magna™ 2 20" Expandable Business Plus Spinner, 20, 14, 9, 8.5, 319.99 TravelPro Platinum® Magna™ 2 Check Point Friendly Business Backpack, 17.5, 12.5, 6.5, 3, 189.99 TravelPro Platinum® Magna™ 2 15.6" Check Point Friendly Business Brief, 12, 16, 3.5, 2.9, 179.99 TravelPro Platinum® Magna™ 2 Spinner Tote, 16, 14, 9, 7.7, 279.99 TravelPro Platinum® Magna™ 2 International Expandable Spinner, 19.5, 14, 9, 7.5, 299.99 TravelPro Platinum® Magna™ 2 Carry-on Rolling Garment Bag, 14, 21.75, 9.5, 10.4, 349.99 TravelPro Platinum® Magna™ 2 Bi-Fold Garment Valet, 21, 23, 3, 3.7, 149.99 TravelPro Crew™ 11 21" Expandable Spinner Suiter, 21, 14, 9, 7.2, 229.99 TravelPro Crew™ 11 22" Expandable Rollaboard® Suiter, 21, 14, 9, 7.1, 219.99 TravelPro Crew™ 11 20" Expandable Business Plus Rollaboard®, 20, 14, 9, 7.5, 219.99 TravelPro Crew 11™ Deluxe Tote, 11, 15, 9, 2.2, 99.99 TravelPro Crew™ 11 Spinner Tote, 16, 14, 9, 6.7, 199.99 TravelPro Crew™ 11 Rolling Tote, 13, 16.5, 8.5, 6.6, 179.99 TravelPro Crew™ 11 International Carry-on Spinner, 18.5, 15, 7.5, 7.1, 229.99 TravelPro Crew™ 11 International Carry-on Rollaboard®, 19.5, 15, 7.5, 7, 199.99 TravelPro Crew™ 11 22" Carry-on Rolling Garment Bag, 14, 22, 9, 9.3, 299.99 TravelPro Crew™ 11 Bi-Fold Garment Bag, 20, 22, 7, 4.8, 179.99 TravelPro Crew™ 11 21" Slim Hardside Carry-On Spinner, 20.5, 14, 9, 7.4, 229.99 TravelPro Crew™ 11 22" Slim Hardside Carry-On Rollaboard®, 21.5, 14, 9, 7, 219.99 TravelPro Crew™ Executive Choice™ 2 Checkpoint Friendly Backpack, 17, 13, 8, 3.8, 199.99 TravelPro Crew™ Executive Choice™ 2 Wheeled Brief, 13.5, 17, 9, 8, 259.99 TravelPro Crew™ Executive Choice™ 2 Pilot Brief, 16, 12, 5.5, 3.6, 199.99 TravelPro Maxlite® 4 21" Expandable Hardside Spinner, 21, 14, 9, 6.7, 149.99 TravelPro T-Pro® Bold™ 2 Soft Duffel Bag, 11, 20, 13, 2.3, 99.99 TravelPro T-Pro® Bold™ 2 21" Expandable Spinner, 21, 14, 9, 7.5, 169.99 TravelPro T-Pro® Bold™ 2 22" Expandable Rollaboard®, 21, 14, 9, 7.4, 149.99 Briggs & Riley WIDE CARRY-ON EXPANDABLE SPINNER, 21, 15, 9, 8.6, 429 Briggs & Riley TALL CARRY-ON EXPANDABLE SPINNER, 22, 14, 9, 8.6, 429 Briggs & Riley MEDIUM EXPANDABLE SPINNER, 26, 19, 12, 10.8, 479 Briggs & Riley LARGE EXPANDABLE SPINNER, 29, 21, 12, 11.7, 529 Briggs & Riley INTERNATIONAL CARRY-ON EXPANDABLE SPINNER, 21, 14, 9, 8, 529 Briggs & Riley DOMESTIC CARRY-ON EXPANDABLE SPINNER, 22, 14, 9, 8.8, 529 Briggs & Riley DOMESTIC CARRY-ON EXPANDABLE SPINNER, 22, 14, 9, 9.3, 549 Briggs & Riley DOMESTIC CARRY-ON EXPANDABLE UPRIGHT (TWO-WHEEL), 22, 14, 9, 8.9, 519 Briggs & Riley LARGE EXPANDABLE SPINNER, 28, 20, 11, 11.9, 649 Briggs & Riley MEDIUM EXPANDABLE SPINNER, 25, 18, 11, 11, 599 Briggs & Riley INTERNATIONAL CARRY-ON EXPANDABLE WIDE-BODY SPINNER, 21, 15, 9, 9, 549 Briggs & Riley MEDIUM EXPANDABLE SPINNER, 27, 18.5, 11.5, 11.6, 599 Briggs & Riley INTERNATIONAL CARRY-ON EXPANDABLE WIDE-BODY UPRIGHT (TWO-WHEEL), 21, 15, 9, 9.3, 519 Briggs & Riley MEDIUM EXPANDABLE UPRIGHT (TWO-WHEEL), 25, 18, 10.5, 10.2, 569 Briggs & Riley INTERNATIONAL CARRY-ON SPINNER, 21, 14.5, 9, 7.5, 399 Briggs & Riley LARGE EXPANDABLE UPRIGHT (TWO-WHEEL), 28, 20, 10.5, 10.9, 619 Briggs & Riley EXTRA LARGE EXPANDABLE SPINNER, 31, 22.5, 15, 14.3, 719 Briggs & Riley COMMUTER EXPANDABLE SPINNER, 19, 14, 9, 8.4, 499 Briggs & Riley COMMUTER EXPANDABLE UPRIGHT (TWO-WHEEL), 19, 14, 9, 8.1, 459 Briggs & Riley DOMESTIC CARRY-ON UPRIGHT (TWO-WHEEL) GARMENT BAG, 22, 14, 9, 9, 519 Briggs & Riley ROLLING CABIN BAG (TWO-WHEEL), 13.5, 15.5, 9.5, 6.2, 359 Briggs & Riley LARGE UPRIGHT (TWO-WHEEL) DUFFLE, 29, 18, 16.5, 11, 549 Briggs & Riley LARGE EXPANDABLE SPINNER, 30, 20, 12, 13.5, 649 Briggs & Riley LARGE SPINNER, 30, 20, 12, 13, 479.20 Briggs & Riley MEDIUM SPINNER, 27, 18.5, 11.5, 11.7, 439.20 Briggs & Riley WARDROBE SPINNER, 22.5, 24.5, 13.5, 15.1, 749 Briggs & Riley INTERNATIONAL CARRY-ON SPINNER, 21, 14, 9, 8.9, 470 Briggs & Riley EXTRA LARGE SPINNER, 32, 22, 12, 14.6, 669 Briggs & Riley EXPLORE DOMESTIC CARRY-ON EXPANDABLE SPINNER, 22, 14, 9, 7.4, 340 Briggs & Riley MEDIUM UPRIGHT (TWO-WHEEL) DUFFLE, 27, 14, 16.5, 9.7, 459 Briggs & Riley ROLLING CABIN BAG (TWO-WHEEL), 14, 15.5, 9.5, 5.4, 280 Briggs & Riley EXPLORE LARGE EXPANDABLE SPINNER, 29, 19.5, 11.5, 10.3, 400 Briggs & Riley DELUXE WHEELED GARMENT BAG, 21, 24, 10.5, 12.6, 649 Briggs & Riley CABIN SPINNER, 15, 15, 8.5, 6.7, 399 Briggs & Riley LARGE EXPANDABLE SPINNER, 29, 21, 12, 11.7, 529 Briggs & Riley CABIN SPINNER1, 15.5, 15.5, 10, 7.5, 399 Briggs & Riley MEDIUM SPINNER BRIEF, 14.5, 15.5, 9, 8, 479 Briggs & Riley EXPLORE DOMESTIC EXPANDABLE UPRIGHT (TWO-WHEEL), 22, 14, 9, 7.3, 320 Briggs & Riley LARGE SPINNER BRIEF, 15, 17.5, 9, 8.4, 499 Briggs & Riley EXPLORE MEDIUM EXPANDABLE SPINNER, 26, 17.5, 10.5, 9.2, 370 Briggs & Riley TALL CARRY-ON EXPANDABLE UPRIGHT (TWO-WHEEL, 22, 14, 9, 8.5, 399 Briggs & Riley WHEELED WARDROBE, 23, 24, 13, 14.1, 719 Briggs & Riley EXPLORE INTERNATIONAL WIDE-BODY SPINNER, 21, 15, 9, 8.2, 320 Briggs & Riley ROLLING CABIN BAG (TWO-WHEEL), 14, 15.5, 9.5, 6.2, 299 Briggs & Riley EXPLORE EXPANDABLE COMMUTER UPRIGHT (TWO-WHEEL), 20, 13.5, 10, 6.8, 300 Briggs & Riley EXPLORE MEDIUM EXPANDABLE UPRIGHT (TWO-WHEEL), 26, 17.5, 11, 8.4, 288 Briggs & Riley PILOT CARRY-ON EXPANDABLE UPRIGHT (TWO-WHEEL), 21.5, 14, 9, 8.1, 399 Eagle Creek Morphus™ International Carry-On, 13.78, 20.67, 9.055, 7.098, 300 Eagle Creek Tarmac 26, 17.71, 25.98, 13.38, 9.21, 250 Eagle Creek Switchback™ International Carry-On, 14.17, 21.65, 7.87, 6.48, 290 Eagle Creek ORV Trunk 30, 16.53, 30.31, 14.96, 9.89, 290 Eagle Creek ORV Trunk 36, 16.53, 36.22, 16.14, 11.045, 320 Eagle Creek Gear Warrior™ AWD 29, 17.32, 28.93, 11.81, 8.48, 240 Eagle Creek Gear Warrior™ AWD 26, 15.35, 25.98, 10.03, 7.25, 220 Eagle Creek Gear Warrior™ AWD International Carry-On, 13.77, 21.65, 7.67, 6.08, 200 Eagle Creek Cargo Hauler Rolling Duffel 120L, 32.28, 13.77, 15.74, 3.85, 140 Eagle Creek Cargo Hauler Rolling Duffel 90L, 29.13, 12.59, 14.56, 3.637, 130 Eagle Creek Load Warrior International Carry-On, 13.97, 20.27, 7.87, 4.58, 180 Eagle Creek Load Warrior 26, 15.35, 26.377, 11.02, 5.42, 200 Eagle Creek Tarmac International Carry-On, 13.77, 21.65, 7.87, 6.76, 220 Eagle Creek Global Companion Travel Pack 40L, 13.77, 21.65, 7.87, 3.5, 230 Eagle Creek Global Companion Travel Pack 65L, 13.77, 25.98, 12.2, 5.13, 230 Eagle Creek Expanse™ Flatbed 29, 16.14, 29.13, 11.81, 8.88, 145 Eagle Creek Expanse™ Flatbed 32, 16.14, 31.88, 12.2, 9.25, 165 Eagle Creek Expanse™ Drop Bottom Wheeled Duffel 32, 13.97, 31.88, 15.94, 8.28, 185 Eagle Creek Expanse™ Convertible International Carry-On, 13.77, 21.25, 7.87, 6.15, 140 Eagle Creek Expanse™ Convertible 29, 16.14, 29.13, 12.2, 9.47, 180 Eagle Creek Expanse™ AWD 26, 16.92, 25.98, 12.2, 9.612, 175 Eagle Creek Expanse™ AWD International Carry-On, 13.77, 21.25, 7.87, 6.06, 145 Eagle Creek Expanse™ AWD 30, 18.89, 29.92, 12.007, 10.18, 200 Eagle Creek Expanse™ International Carry-On, 13.77, 21.65, 7.87, 5.71, 135 Eagle Creek Expanse™ Upright 26, 16.92, 25.98, 12.2, 8.642, 165 Eagle Creek Gear Warrior 29, 16.33, 29.13, 12.007, 7.12, 220 Eagle Creek Gear Warrior 32, 16.14, 31.88, 11.81, 7.58, 240 Eagle Creek No Matter What™ Flatbed Duffel International Carry-On, 12.99, 20.07, 8.07, 5.68, 135 Tumi Tegra-Lite® Max International Expandable Hybrid Carry-On, 22, 14, 9, 11.02, Tumi International Expandable 4 Wheeled Carry-On, 22, 14, 9, 10.8, Tumi International Carry-On, 22, 14, 9, 6.24, Tumi Gatwick International Expandable Leather Carry-On, 22, 14, 9, 13.0, Tumi Aberdeen Continental Expandable Carry-On, 22, 16, 9, 12.12, Tumi Arcadia International Expandable Carry-On, 22, 14, 9, 12.7, Tumi Gatwick International Expandable Carry-On, 22, 14, 9, 11.68, Tumi Reeves Continental Expandable Carry-On, 22, 15.75, 9.5, 13.3, Tumi International Carry-On, 22, 14, 9, 11.02, Tumi Continental Carry-On, 22, 16.5, 9, 11.68, Tumi International 4 Wheeled Office Carry-On, 22, 14, 9, 10.5, Tumi Continental Expandable 4 Wheeled Front Lid Carry-On, 22, 16, 9, 10.8, Tumi Front Lid International Carry-On, 22, 14, 9, 10.1, Tumi Continental Expandable 4 Wheeled Carry-On, 22, 16, 9, 11.1, Tumi International Expandable 4 Wheeled Carry-On, 22, 14, 9, 10.71, Tumi 4 Wheeled Compact Duffel, 15, 20, 9.5, 9.39, Tumi Tegra-Lite® Max Continental Expandable Carry-On, 22, 16, 9, 9.8, Tumi Alex Continental Expandable 4 Wheeled Carry-On, 22, 16, 9, 10.8, Tumi International Expandable 2 Wheeled Carry-On, 22, 14, 9, 9.0, Tumi Continental Expandable 4 Wheeled Front Lid Carry-On, 22, 16, 9, 11.44, Tumi Tegra-Lite® Max International Expandable Hybrid Carry-On, 22, 14, 9, 11.02, Tumi International 4 Wheeled Office Carry-On, 22, 14, 9, 10.5, Tumi Sam International Expandable 4 Wheeled Carry-On, 22, 14, 9, 10.6, Tumi Tegra-Lite® Max International Expandable Carry-On, 22, 14, 9, 9.4, Tumi International 4 Wheeled Slim Carry-On, 21.75, 15.75, 7.9, 9.7, Tumi Tres Léger Continental Carry-On, 22, 16, 9, 8.16, Tumi International Slim Carry-On, 21.75, 15.75, 7.9, 6.27, Tumi Wheeled Duffel Carry-On, 22, 13.5, 9.5, 7.85, Tumi Continental Expandable Carry-On, 22, 15.75, 9, 7.48, Tumi International Expandable Carry-On, 22, 14, 9, 7.12, Tumi Super Léger International Carry-On, 21, 14, 8.5, 7.5, Tumi Oslo 4 Wheeled Compact Carry-On, 16, 14, 7.5, 7.9, Ricardo Beverly Hills MALIBU BAY 20-INCH CARRY-ON SPINNER UPRIGHT, 20, 14, 8, 6.5, 200 Ricardo Beverly Hills MAR VISTA 2.0 21-INCH CARRY-ON SPINNER UPRIGHT, 21.25, 15, 9.5, 7.8, 260 Ricardo Beverly Hills YOSEMITE 21-INCH CARRY-ON SPINNER UPRIGHT, 20.5, 15, 11, 6.5, 200 Ricardo Beverly Hills SPECTRUM 20-INCH CARRY-ON SPINNER SUITCASE, 20, 14.75, 9.25, 7.1, 240 Ricardo Beverly Hills OCEAN DRIVE 21-INCH CARRY-ON SPINNER UPRIGHT, 21, 15, 10.5, 7.4, 300 Ricardo Beverly Hills ARRIS 20-INCH CARRY-ON SPINNER SUITCASE, 19.5, 15, 9, 6.4, 320 Ricardo Beverly Hills AILERON 20-INCH CARRY-ON SPINNER SUITCASE, 20, 14, 9.5, 11.2, 600 Ricardo Beverly Hills OCEAN DRIVE 19-INCH MOBILE OFFICE, 18.5, 14, 10, 8.1, 360 Ricardo Beverly Hills MAR VISTA 2.0 16-INCH UNDER SEAT ROLLING TOTE, 16, 13, 8, 4.9, 240 Ricardo Beverly Hills MAR VISTA 2.0 17-INCH INTERNATIONAL CARRY-ON, 17, 13, 8.75, 6.3, 240 Ricardo Beverly Hills MAR VISTA 2.0 19-INCH CARRY-ON SPINNER UPRIGHT, 18.5, 14, 9, 7.4, 260 Ricardo Beverly Hills SAN MARCOS 16-INCH UNDER SEAT ROLLING TOTE, 16, 13, 8, 5.1, 280 Ricardo Beverly Hills SAN MARCOS 21-INCH CARRY-ON SPINNER UPRIGHT, 21, 15, 8, 8.0, 340 Ricardo Beverly Hills COASTAL 20-INCH CARRY-ON SPINNER SUITCASE, 19.5, 14.5, 7.5, 5.7, 240 Ricardo Beverly Hills SAN CLEMENTE 19-INCH INTERNATIONAL CARRY-ON, 19, 13.5, 9, 6.3, 200 Ricardo Beverly Hills SAN CLEMENTE 21-INCH CARRY-ON SPINNER UPRIGHT, 21, 15, 10.5, 7.6, 240 Ricardo Beverly Hills MONTEREY 21-INCH 2-WHEEL CARRY-ON UPRIGHT, 21.2, 13.5, 8.25, 7.1, 200 Ricardo Beverly Hills MALIBU BAY 16-INCH UNDER SEAT ROLLING TOTE, 16, 13, 8, 4.9, 180 Ricardo Beverly Hills RIO DELL 21-INCH CARRY-ON SPINNER SUITCASE, 20.5, 14.5, 9.5, 7.4, 240 Ricardo Beverly Hills DEL MAR 21-INCH CARRY-ON SPINNER UPRIGHT, 20.5, 15, 11, 5.7, 200 American Tourister Sonic Rolling Tote, 16.5, 13.8, 8.0, 6.2, 140 American Tourister Sonic 21" Spinner, 20.25, 14.0, 8.0, 7.1, 160 American Tourister Moonlight 21" Spinner, 20.0, 14.0, 9.0, 8.0, 179.99 American Tourister Curio 20" Spinner, 20.0, 14.0, 9.0, 5.73, 99.99 American Tourister Technum 20" Spinner, 20.0, 14.0, 9.0, 6.5, 259.99 American Tourister Zoom Underseater Spinner Tote, 14.75, 13.0, 8.0, 5.7, 159.99 American Tourister Zoom 22" Wheeled Duffel, 22.0, 12.0, 12.0, 3.5, 159.99 American Tourister Zoom 21" Spinner, 20.25, 14.0, 8.0, 7.7, 199.99 American Tourister Belle Voyage 20" Wheeled Duffel, 20.0, 12.5, 11.0, 5.8, 139.99 American Tourister Belle Voyage 21" Spinner, 20.25, 14.0, 8.0, 7.8, 179.99 American Tourister 4 Kix Rolling Tote, 16.5, 13.8, 8.0, 6.2, 139.99 American Tourister 4 Kix 21" Spinner, 20.25, 14.0, 8.0, 7.1, 159.99 American Tourister Wavebreaker 20" Spinner, 20.0, 15.0, 8.0, 5.4, 160 American Tourister Z-Lite DLX 20" Spinner, 22.0, 14.0, 10.0, 5.3, 180 American Tourister Sunset Cruise 20" Spinner, 20.0, 15.0, 8.0, 5.7, 79.99 American Tourister iLite Max 21" Spinner, 21.0, 14.5, 8.0, 7.2, 99.99 American Tourister Star Wars Rogue One 20" Spinner, 20.0, 13.25, 9.0, 7.2, 320 American Tourister Disney 18" Hardside Upright, 18.0, 13.0, 8.0, 4.5, 59.99 American Tourister Disney 18" Softside Upright, 18.0, 12.0, 7.0, 4.2, 39.99 American Tourister Disney Minnie Mouse 21" Spinner, 21.0, 14.5, 8.0, 6.8, 119.99 American Tourister Star Wars 21" Spinner, 21.0, 14.75, 9.0, 6.88, 149.99 American Tourister Star Wars 21" Spinner, 21.0, 14.75, 9.5, 6.1, 149.99 American Tourister Star Wars 20" Spinner, 21.0, 14.75, 9.0, 6.88, 149.99 American Tourister Tribus 25" Spinner, 25.0, 18.0, 11.4, 10.4, 139.99 American Tourister Tribus 20" Spinner, 20.0, 14.6, 9.0, 7.7, 119.99 American Tourister Moonlight 21" Spinner, 20.0, 14.0, 9.0, 8.0, 179.99 American Tourister Moonlight 24" Spinner, 24.0, 16.0, 11.0, 10.5, 219.99 American Tourister Moonlight 28" Spinner, 28.25, 19.5, 12.5, 11.0, 259.99 American Tourister Belle Voyage 21" Spinner, 20.25, 14.0, 8.0, 7.8, 179.99 American Tourister Belle Voyage 25" Spinner, 24.25, 17.0, 9.5, 8.8, 219 American Tourister Belle Voyage 28" Spinner, 28.25, 19.0, 10.5, 10.5, 259.99 American Tourister Technum 24" Spinner, 24.0, 16.0, 11.0, 7.2, 299.99 American Tourister Technum 28" Spinner, 29.25, 19.5, 12.5, 8.5, 339.99 American Tourister 4 Kix 21" Spinner, 20.25, 14.0, 8.0, 7.1, 159.99 American Tourister 4 Kix 25" Spinner, 24.25, 17.0, 9.5, 7.9, 199.99 American Tourister 4 Kix 28" Spinner, 28.25, 19.0, 10.5, 9.5, 239.99 American Tourister Curio 20" Spinner, 20.0, 14.0, 9.0, 5.73, 99.99 American Tourister Curio 25" Spinner, 25.0, 18.5, 10.3, 8.5, 129.99 American Tourister Curio 29" Spinner, 29.25, 20.6, 12.0, 10.7, 159.99 American Tourister Zoom Underseater Spinner Tote, 14.75, 13.0, 8.0, 5.7, 159.99 American Tourister Zoom 21" Spinner, 20.25, 14.0, 8.0, 7.7, 199.99 American Tourister Zoom 25" Spinner, 24.25, 17.0, 9.5, 9.2, 239.99 American Tourister Zoom 28" Spinner, 28.25, 19.0, 10.5, 10.5, 279.99 American Tourister Wavebreaker 28" Spinner, 28.0, 19.0, 11.0, 9.9, 240 American Tourister iLite Max 21" Spinner, 21.0, 14.5, 8.0, 7.2, 99.99 American Tourister Z-Lite DLX 24" Spinner, 26.0, 18.0, 12.0, 7.7, 200 American Tourister Z-Lite DLX 28" Spinner, 30.0, 21.0, 13.5, 9.25, 220 American Tourister Bedford 25" Spinner, 24.5, 18.0, 8.5, 10.8, 200 American Tourister Star Wars Rogue One 20" Spinner, 20.0, 13.25, 9.0, 7.2, 320 American Tourister Pearce Hybrid Wheeled Duffel, 21.0, 17.0, 12.0, 5.4, 199.99 American Tourister Sunset Cruise 24" Spinner, 24.0, 18.0, 10.0, 7.2, 99.99 American Tourister Sunset Cruise 28" Spinner, 28.0, 20.0, 12.0, 9.7, 119.99 American Tourister Disney Minnie Mouse 21" Hardside Spinner, 21.0, 14.75, 9.5, 6.8, 149.99 American Tourister Disney Minnie Mouse 28" Hardside Spinner, 28.0, 19.75, 12.0, 11.82, 219.99 American Tourister Disney Mickey Mouse 28" Spinner, 28.0, 19.0, 11.0, 9.8, 149.99 American Tourister Sonic 28" Spinner, 28.25, 19.0, 10.5, 9.5, 240 American Tourister Sonic 21" Spinner, 20.25, 14.0, 8.0, 7.1, 160 American Tourister Sonic 25" Spinner, 24.25, 17.0, 9.5, 7.9, 200 American Tourister Dartz 28" Spinner, 29.5, 20.5, 12.0, 12.7, 280 American Tourister Dartz 24" Spinner, 25.5, 18.0, 10.5, 10.5, 240 American Tourister Dartz 20" Spinner, 21.0, 14.0, 9.0, 8.0, 200 Osprey Rolling Transporter 90, 31.49, 17.32, 13.77, 7.78, Osprey Rolling Transporter 120, 38.18, 22.44, 14.96, 8.48, Osprey Sojourn 80, 27.95, 14.17, 13.77, 8.97, Osprey Sojourn 60, 25.19, 14.17, 13.77, 8.53, Osprey Shuttle 100, 30.31, 16.14, 14.17, 8.15, Osprey Shuttle 130, 36.22, 16.14, 14.96, 9.12, Osprey Ozone 36 Convertible, 19.68, 14.17, 9.05, 4.76, Osprey Ozone 75 Convertible, 28.34, 14.17, 11.81, 6.94, Osprey Ozone 36, 19.68, 14.17, 9.05, 4.05, Osprey Ozone 46, 22.04, 14.17, 9.05, 4.32, Osprey Ozone 80, 28.34, 14.17, 11.81, 4.96, Osprey Meridian 75, 27.95, 14.17, 12.59, 9.25, Osprey Meridian 60, 22.04, 14.17, 9.05, 8.37, Delsey SEGUR Valise trolley cabine 4 doubles roues 55 cm, 21.65, 13.77, 9.84, 6.17, 184 Delsey MONCEY Valise trolley cabine 4 doubles roues 55 cm, 21.65, 13.77, 9.84, 6.83, 172.7 Delsey TURENNE Valise trolley cabine slim 4 doubles roues 55 cm, 21.65, 15.74, 7.87, 4.40, 265.43 Delsey CAUMARTIN PLUS Valise trolley cabine 4 doubles roues 55 cm, 21.65, 13.77, 9.84, 5.51, 265.43 Delsey CHATELET AIR Valise trolley cabine 4 doubles roues 55 cm, 21.65, 13.77, 9.84, 7.27, 323.39 Delsey TURENNE Valise trolley 4 doubles roues 65 cm, 25.59, 17.51, 10.23, 6.61, 288.62 Travelite Serie CITY 4-Rad Trolley L erw., 19.29, 30.31, 12.59, 9.92, Travelite Serie CITY 4-Rad Trolley M erw., 17.32, 26.77, 11.02, 8.59, Travelite Serie ELBE TWO 4-Rad Trolley L, 20.47, 29.52, 12.20, 8.59, Travelite Serie ELBE TWO 4-Rad Trolley M, 17.71, 25.59, 10.23, 7.05, Travelite Serie ELBE TWO 4-Rad Trolley M+, 19.29, 27.55, 11.02, 8.15, Travelite Serie ELBE TWO 4-Rad Trolley XL, 22.04, 31.88, 12.59, 9.70, Travelite Serie KOSMOS 4-Rad Trolley L, 20.47, 30.31, 11.41, 9.03, Travelite Serie KOSMOS 4-Rad Trolley M erw., 17.71, 26.37, 10.62, 8.15, Travelite Serie MAKRO 4-Rad Trolley L, 20.47, 29.52, 12.20, 10.80, Travelite Serie MAKRO 4-Rad Trolley M, 17.32, 25.98, 10.62, 8.59, Travelite Serie VECTOR 4-Rad Trolley L, 20.07, 30.31, 11.02, 9.47, Travelite Serie VECTOR 4-Rad Trolley M erw., 17.71, 27.55, 10.62, 8.15, Travelite Serie CAPRI 2-Rad Trolley L erw., 19.29, 29.13, 12.20, 8.37, Travelite Serie CAPRI 2-Rad Trolley M erw., 17.32, 24.80, 10.62, 7.05, Travelite Serie CAPRI 4-Rad Trolley L erw., 18.11, 29.92, 11.81, 7.93, Travelite Serie CAPRI 4-Rad Trolley M erw., 16.53, 25.98, 10.23, 6.83, Travelite Serie CROSSLITE 4-Rad Trolley L erw., 18.50, 30.31, 11.81, 7.93, Travelite Serie CROSSLITE 4-Rad Trolley M erw., 16.92, 26.37, 10.23, 7.05, Travelite Serie CROSSLITE Trolley Reisetasche, 31.10, 14.96, 15.35, 7.49, Travelite Serie CROSSLITE Trolley Reisetasche M, 27.16, 12.99, 14.17, 6.39, Travelite Serie DERBY 4-Rad Trolley L erw., 18.50, 30.31, 11.81 , 7.71, Travelite Serie DERBY 4-Rad Trolley M erw., 16.53, 25.98, 10.62, 6.61, Travelite Serie KITE 4-Rad Trolley L erw., 18.50, 29.52, 11.41, 6.39, Travelite Serie KITE 4-Rad Trolley M erw., 16.53, 25.19, 10.62, 5.51, Travelite Serie KITE Trolley Reisetasche, 25.19, 12.99, 12.59, 3.74, Travelite Serie METEOR 4-Rad Trolley L erw., 18.50, 30.31, 12.20, 7.49, Travelite Serie METEOR 4-Rad Trolley M erw., 16.53, 25.98, 10.62, 6.83, Travelite Serie NEOPAK 4-Rad Trolley L erw., 18.98, 30.31, 12.59, 7.71, Travelite Serie NEOPAK 4-Rad Trolley M erw., 16.53, 26.37, 11.02, 6.61, Travelite Serie ORLANDO 2-Rad Trolley L, 18.50, 28.74, 10.23, 9.03, Travelite Serie ORLANDO 2-Rad Trolley M, 16.14, 24.80, 9.84, 7.93, Travelite Serie ORLANDO Trolley Reisetasche, 27.55, 13.77, 12.99, 5.95, Travelite Serie PORTOFINO 2-Rad Trolley L, 18.50, 28.34, 11.02, 8.15, Travelite Serie PORTOFINO 2-Rad Trolley M, 16.53, 24.40, 9.44, 6.83, Travelite Serie STREAM 4-Rad Trolley L erw., 18.50, 29.92, 12.20, 7.93, Travelite Serie STREAM 4-Rad Trolley M erw., 16.53, 25.98, 10.62, 7.05, """ backpacks = """ Samsonite Red Claken Backpack M, 17.5, 12.6, 5.3, 2.8, 129 Samsonite Red Khardeon Backpack M 3 Way, 17.1, 11.6, 4.3, 1.8, 169 Samsonite Red Turris Backpack L 2, 18.5, 12.2, 5.7, 3.29, 200 Samsonite Red Turris Sling Bag, 12.2, 7.67, 2.95, 1.016, 75 Samsonite Mens Leather 1910 Heritage Backpack, 16.1, 13.0, 4.5, 3.2, 259 Samsonite Mens Leather Classic Slim Backpack, 17.0, 11.4, 4.3, 3.1, 249 Samsonite Mens Leather Classic Traditional Backpack, 17.0, 11.4, 7.5, 4.1, 329 Samsonite Mens Leather Classic Weekender, 18.9, 12.6, 9.0, 4.1, 349 Samsonite Mens Leather Classic Duffel, 23.0, 11.8, 9.0, 4.3, 399 Samsonite Ladies Leather City Backpack, 16.3, 11.8, 5.5, 2.5, 199 Samsonite Ladies Leather Hamptons Backpack, 16.5, 11.8, 6.3, 2.6, 219 Samsonite Ladies Leather Zip Weekender, 19.7, 16.0, 7.9, 4.4, 299 Samsonite Ladies Leather Weekender, 19.7, 13.0, 10.6, 3.6, 259 Samsonite UBX Commuter Backpack, 18.0, 13.5, 8.5, 2.6, 100 Samsonite Uplite 20" Wheeled Duffle, 20.47, 13.98, 8.27, 4.9, 230 Samsonite Openroad 15.6" Laptop Backpack, 17.3, 14.5, 6.7, 3.2, 200 Samsonite Modern Utility Paracycle Backpack, 17.75, 12.0, 8.0, 2.0, 140 Samsonite Openroad 14.1" Laptop Backpack, 16.0, 13.8, 6.4, 2.8, 100 Samsonite Xenon 3.0 Small Backpack, 15.5, 10.5, 5.0, 1.6, 80 Samsonite Xenon 3.0 Slim Backpack, 16.5, 12.0, 6.0, 2.1, 90 Samsonite Modern Utility Small Backpack, 15.5, 10.75, 6.0, 1.5, 90 Samsonite Memphis Duffle 55/22, 1.7, 13.0, 12.6, 2.4, 200 Samsonite Modern Utility Double Shot Backpack, 18.0, 12.0, 8.0, 2.5, 140 Samsonite Business Slim Backpack, 16.5, 11.5, 6.0, 3.0, 290 Samsonite Red Brillo Backpack, 15.7, 11.4, 3.1, 3.74, 125 Samsonite Kombi Large Backpack, 17.0, 12.0, 6.75, 2.5, 119 Samsonite Novex Perfect Fit Laptop Backpack, 17.5, 12.25, 7.25, 2.9, 100 Samsonite Karissa Biz Backpack 14.1", 16.1, 12.4, 7.9, 1.8, 140 Samsonite Karissa Biz Duffle, 19.7, 13.4, 10.6, 2.0, 190 Samsonite Red Glehn Backpack, 17.12, 12.9, 4.7, 3.1, 140 Samsonite Tectonic 17" Perfect Fit Laptop Backpack, 18.0, 13.0, 9.0, 3.086, 130 Samsonite Ripstop 35" Rolling Duffel, 35.0, 16.0, 16.0, 11.5, 220 Samsonite Tote-A-Ton Duffle Bag, 33.0, 17.0, 11.5, 1.0, 40 Samsonite Ripstop 30" Rolling Duffel, 30.0, 15.0, 15.0, 10.87, 200 Samsonite Tectonic Tectonic 21" Wheeled Backpack, 21.0, 14.0, 11.0, 6.6, 170 Samsonite Andante 22" Wheeled Duffle, 22.0, 12.5, 12.0, 5.07, 60 Samsonite Andante 28" Drop Bottom Wheeled Duffle, 28.0, 14.0, 14.0, 7.27, 100 Samsonite Tectonic 2 Large Backpack, 8.6, 13.3, 18.0, 2.6, 110 Samsonite Wheeled Computer Backpack, 19.0, 14.0, 8.0, 5.0, 110 Samsonite Kombi 4 Square Backpack, 15.75, 9.0, 5.5, 2.2, 99.99 Samsonite Ripstop 26" Rolling Duffel, 26.0, 14.0, 14.0, 10.25, 100 Samsonite Wheeled Computer Backpack, 21.0, 14.0, 8.0, 5.0, 130 Samsonite Tectonic 2 Medium Backpack, 8.2, 12.2, 16.9, 2.2, 100 Samsonite Andante 32" Drop Bottom Wheeled Duffle, 32.0, 17.5, 14.5, 8.7, 120 Samsonite Classic Business Perfect Fit Backpack, 17.8, 12.5, 9.25, 2.205, 70 Samsonite Kombi Small Backpack, 16.0, 10.5, 5.0, 1.5, 89.99 Samsonite MVS Spinner Backpack, 19.0, 12.0, 12.0, 6.4, 100 Samsonite Pro 4 DLX 15.6" Perfect Fit 2 Gusset Toploader, 16.5, 12.75, 5.0, 3.2, 190 Samsonite Pro 4 DLX Perfect Fit Urban Laptop Backpack, 17.25, 12.25, 5.5, 3.2, 220 Samsonite GT Supreme Laptop Backpack 14.1, 15.75, 10.5, 6.5, 2.0, 240 Samsonite GT Supreme Laptop Backpack 15.6, 17.5, 12.0, 9.0, 2.4, 300 TravelPro Platinum® Magna™ 2 Check Point Friendly Business Backpack, 17.5, 12.5, 6.5, 3, 189.99 TravelPro Crew™ Executive Choice™ 2 Checkpoint Friendly Backpack, 17, 13, 8, 3.8, 199.99 TravelPro T-Pro® Bold™ 2 Computer Backpack, 17, 13, 8, 2.5, 99.99 Briggs & Riley SUITER DUFFLE, 12.5, 22, 9, 3.2, 299 Briggs & Riley LARGE SHOPPING TOTE, 13, 17, 7.5, 2.3, 185 Briggs & Riley CABIN DUFFLE, 10.5, 16.5, 11.5, 3.6, 215 Briggs & Riley EXPANDABLE CABIN BAG, 11, 16.5, 8, 3.6, 249 Briggs & Riley EXCURSION BACKPACK, 18, 13.5, 7, 2.2, 145 Briggs & Riley TECH KIT, 6, 9, 3, 0.5, 89 Briggs & Riley SLIM BRIEF, 12, 16.5, 3.5, 2.3, 269 Briggs & Riley MEDIUM BRIEF, 12, 16.5, 5, 2.8, 289 Briggs & Riley MEDIUM EXPANDABLE BRIEF, 12, 16.5, 5.5, 3.3, 309 Briggs & Riley FRAMED WEEKENDER, 13.5, 18, 9, 3.1, 289 Briggs & Riley LARGE CARGO BACKPACK, 19, 15, 8, 3.2, 319 Briggs & Riley LARGE WEEKENDER, 12, 20, 9, 2.3, 209 Briggs & Riley EXCHANGE MEDIUM EXPANDABLE DUFFLE, 20, 12, 8, 2.7, 170 Briggs & Riley COMPACT GARMENT BAG, 14, 22, 8.5, 6.6, 359 Briggs & Riley CARGO BACKPACK, 18, 11.5, 8, 2.3, 199 Briggs & Riley DELUXE GARMENT BAG, 20.5, 22, 11.5, 8.5, 419 Briggs & Riley MEDIUM DUFFLE, 13, 20, 10.5, 2.6, 229 Briggs & Riley SHOPPING TOTE, 13.5, 19, 6.5, 1.8, 149 Briggs & Riley CLAMSHELL CABIN BAG, 12.5, 18, 8.5, 2.6, 199 Briggs & Riley CABIN BAG, 12, 16, 7, 2.7, 249 Briggs & Riley MEDIUM BACKPACK, 17, 12, 4.5, 2.5, 249 Briggs & Riley FLAPOVER EXPANDABLE BACKPACK, 16, 12, 3, 3, 269 Briggs & Riley MEDIUM BRIEF, 12, 16.5, 5, 3.7, 207 Briggs & Riley MEDIUM EXPANDABLE BRIEF, 12, 16.5, 6, 4.1, 299 Briggs & Riley LARGE CLAMSHELL BACKPACK, 17.8, 13.5, 8, 3.6, 299 Briggs & Riley SIMPLE DUFFLE, 10, 21, 8.5, 2.5, 249 Briggs & Riley MICRO MESSENGER, 10, 13.5, 3.5, 2.1, 229 Briggs & Riley WEEKENDER, 15, 22, 9, 1.4, 219 Briggs & Riley FRAMED WIDE-MOUTH BACKPACK, 14.5, 10, 7, 1.8, 269 Briggs & Riley SMALL WIDE-MOUTH BACKPACK, 15, 10, 7, 1.5, 229 Briggs & Riley ARGE BACKPACK, 18, 12, 8, 2.7, 279 Briggs & Riley SMALL U-ZIP BACKPACK, 15, 10, 7, 1.5, 189 Briggs & Riley HORIZONTAL TOTE, 12, 19, 6.5, 1.2, 229 Briggs & Riley ADVANCE BACKPACK, 17.5, 13, 7, 2.2, 219 Briggs & Riley CONTACT SMALL BRIEF, 9.8, 14, 3.3, 1.9, 179 Briggs & Riley CONTACT MEDIUM BRIEF, 10.8, 16, 3.8, 2.2, 189 Briggs & Riley ADAPT EXPANDABLE BRIEF, 12.5, 16, 6.4, 2.7, 219 Briggs & Riley RELAY CONVERTIBLE BRIEF, 16, 11.5, 6.3, 2.9, 219 Briggs & Riley DISPATCH MESSENGER, 11, 17.5, 5, 2.4, 199 Briggs & Riley ACTIVATE BACKPACK, 17, 12.5, 7, 2.2, 209 Briggs & Riley ACCELERATE BACKPACK, 18.5, 14, 7.5, 2.5, 229 Briggs & Riley LINK CROSSBODY, 12.3, 9.3, 2.5, 1.2, 129 Briggs & Riley SHOPPING TOTE1, 13.5, 18.5, 7.5, 1, 199 Briggs & Riley BACKPACK, 16, 11, 5.5, 1.4, 155 Eagle Creek Cargo Hauler Duffel 60L / Medium, 26.37, 10.23, 13.38, 1.80, 90 Eagle Creek Expanse™ Hauler, 13.97, 22.04, 9.05, 2.11, 85 Eagle Creek Load Hauler Expandable, 14.17, 22.04, 9.25, 1.83, 100 Eagle Creek Travel Bug Mini Backpack RFID, 9.44, 14.96, 4.92, 0.68, 60 Eagle Creek Mobile Office Backpack, 12.59, 21.25, 8.85, 2.337, 140 Eagle Creek Afar Backpack, 12.2, 20.07, 8.26, 1.7, 100 Eagle Creek XTA Backpack, 11.41, 20.07, 7.67, 1.3, 80 Eagle Creek Straight Up Business Brief RFID, 12.59, 18.11, 7.08, 1.87, 130 Eagle Creek Universal Traveler Backpack RFID, 13.58, 20.47, 9.055, 1.8, 130 Tumi Sheppard Deluxe Brief Pack®, 17, 14, 8, 3.2, Tumi London Roll Top Backpack, 19, 14, 6, 4.16, Tumi Nellis Backpack, 16, 14, 6.5, 2.8, Tumi Carbon Fiber Morley Backpack, 16.25, 12.25, 7, 4.32, Tumi Kenton Foldover Backpack Leather, 17.5, 5, 15.5, 3.9, Tumi Logan Backpack Leather, 15, 13, 4.5, 3.5, Tumi Davis Backpack, 16.5, 11.5, 4.25, 2.82, Tumi Halle Backpack, 14.25, 10.75, 6.1, 1.3, Tumi Bradley Backpack Leather, 17, 14, 6.5, 4.4, Tumi Dresden Flap Backpack, 16.5, 11.5, 6.75, 3.9, Tumi Dresden Flap Leather Backpack, 16.5, 11.5, 6.75, 4.0, Tumi Morrison Backpack, 16.25, 12.25, 7, 3.75, Tumi Morrison Backpack Leather, 16.25, 12.25, 7, 5.05, Tumi Pheobe Backpack, 12.25, 11, 5, 3.2, Tumi Bradley Backpack, 17, 14, 6.5, 3.7, Tumi Webster Backpack, 18, 12, 5.5, 3.2, Tumi Logan Backpack, 15, 13, 4.5, 3.0, Tumi TUMI T-Pass® Business Class Leather Brief Pack®, 16.5, 12, 8, 3.95, Tumi Three Way Brief, 12, 16.5, 6, 4.6, Tumi Bates Backpack, 16.5, 11.5, 3, 2.9, Tumi Nellis Backpack Leather, 16, 6.5, 14, 3.3, Tumi Wheeled Backpack, 21, 13, 8, 6.39, Tumi Carson Backpack Leather, 17, 12, 5.5, 2.55, Tumi Hagen Backpack Leather, 14.25, 11.5, 5.5, 2.1, Tumi Becca Backpack, 15.5, 13, 5.25, 2.9, Tumi Grantley Backpack, 15, 13, 5, 3.3, Tumi TUMI T-Pass® Business Class Brief Pack®, 17.5, 9, 13, 3.7, Tumi Kings Backpack Tote, 17.5, 15, 8.5, 3.81, Tumi Compact Laptop Brief Pack, 16, 12.25, 7, 4.08, Tumi T-Pass® Business Class Brief Pack®, 16.5, 12, 7.5, 3.95, Tumi Orion Backpack, 15.5, 13.5, 3.5, 3.05, Tumi Tyndall Utility Backpack, 18, 12, 7, 3.4, Tumi Dori Backpack Leather, 12.75, 10, 4.5, 1.85, Tumi Ursula T-Pass® Backpack, 16.5, 12.75, 7.25, 2.65, Tumi Sheppard Deluxe Brief Pack®, 17, 14, 8, 3.47, Tumi Massena Sling, 15, 9, 4, 1.6, Tumi Hettie Backpack, 15, 11.75, 3.5, 2.4, Tumi London Roll Top Backpack, 19, 14, 6, 3.6, Tumi Slim Solutions Brief Pack®, 16, 6, 13, 3.39, Tumi Kelley Sling Leather, 13.5, 6, 5, 1.6, Tumi Rivas Backpack, 15, 11.75, 6, 1.45, Tumi Halle Leather Backpack, 14.25, 10.75, 6.1, 3.0, Tumi Hagen Backpack, 14.25, 11.5, 5.5, 1.3, Tumi Calais Backpack, 16, 12.25, 5.5, 1.8, Tumi Daniella Small Leather Backpack, 13.5, 9, 4.5, 2.1, Tumi Dori Backpack, 12.75, 10, 4.5, 1.15, Tumi Willow Backpack, 17, 13, 7.75, 2.8, Tumi Jena Convertible Backpack, 15, 12.75, 3, 1.35, Tumi Bryce Backpack, 13.25, 9.5, 5.5, 1.2, Tumi Butler Backpack, 16.75, 11.5, 5.5, 2.65, Tumi Elwood Backpack, 14.5, 9.5, 4.25, 1.8, Tumi Lexa Zip Flap Backpack, 12.5, 9.5, 5.5, 1.85, Tumi Columbus Utility Pouch, 5.75, 10.5, 4.75, 1.01, Tumi Smith Sling, 14.25, 9.75, 5.12, 2.31, Tumi Daniella Small Backpack, 13.5, 9, 4.5, 1.1, Tumi Marshall Sling, 14.25, 8.5, 3.25, 1.3, Tumi Nadia Convertible Backpack/Sling, 14.75, 9.5, 2, 1.45, Tumi Just In Case® Travel Backpack, 15.5, 12.25, 4.5, 0.6, Ricardo Beverly Hills CARRY-ON GARMENT BAG, 18, 23.5, 4.5, 4.9, 280 Ricardo Beverly Hills MAR VISTA 2.0 20-INCH ROLLING CITY DUFFEL, 12.5, 20, 10.5, 5.0, 200 Ricardo Beverly Hills MALIBU BAY 20-INCH ROLLING CITY DUFFEL, 12, 19.5, 10.5, 4.5, 180 Osprey Atmos AG 65, 34.25, 15.35, 16.14, 4.82, Osprey Atmos AG 50, 32.67, 14.96, 15.35, 4.45, Osprey Aura AG 50, 32.28, 14.17, 14.17, 4.43, Osprey Aura AG 65, 33.46, 14.96, 15.74, 4.65, Osprey Xenith 75, 33.64, 14.57, 15.35, 5.15, Osprey Xenith 88, 35.03, 16.14, 17.32, 5.24, Osprey Xenith 105, 35.43, 16.14, 18.11, 5.40, Osprey Xenith 85, 32.83, 15.35, 16.53, 4.96, Osprey Xenith 70, 33.85, 14.96, 15.74, 4.98, Osprey Levity 60, 28.34, 15.74, 12.99, 1.91, Osprey Levity 45, 26.77, 15.74, 11.81, 1.82, Osprey Exos 58, 31.49, 16.14, 14.56, 2.71, Osprey Aether AG 85, 34.25, 16.92, 15.35, 5.33, Osprey Aether AG 70, 33.46, 15.74, 13.38, 5.13, Osprey Aether AG 60, 32.67, 15.35, 12.2, 5.04, Osprey Ariel AG 65, 33.46, 15.35, 12.59, 4.87, Osprey Ariel AG 55, 33.07, 14.96, 12.2, 4.82, Osprey Kestrel 68, 29.92, 15.74, 17.32, 4.01, Osprey Kestrel 58, 29.13, 15.35, 16.92, 3.92, Osprey Kyte 66, 29.13, 15.74, 16.14, 3.90, Osprey Stratos 50, 27.55, 14.17, 14.96, 3.68, Osprey Sirrus 50, 26.77, 12.59, 13.77, 3.57, Osprey Tropos 32, 22.04, 12.99, 12.20, 2.73, Osprey Pandion 28, 21.65, 12.99, 11.02, 2.55, Osprey Talia 30, 20.86, 12.99, 12.99, 2.62, Osprey Palea 26, 20.47, 12.99, 11.81, 2.44, Osprey Daylite Plus, 18.11, 10.23, 9.44, 1.19, Osprey Daylite, 18.11, 9.44, 8.66, 0.99, Osprey Axis 18, 18.11, 11.41, 8.66, 1.36, Osprey Flare 22, 18.89, 11.41, 11.41, 1.67, Osprey Nebula 34, 19.68, 12.99, 11.81, 2.11, Osprey Quasar 28, 19.68, 13.38, 11.41, 2.05, Osprey Comet 30, 19.68, 12.99, 12.20, 2.13, Osprey Questa 27, 18.89, 11.81, 10.23, 1.71, Osprey Nova 33, 18.89, 11.81, 11.41, 2.02, Osprey Celeste 29, 18.89, 11.81, 11.81, 1.96, Osprey Radial 34, 21.25, 12.99, 13.38, 3.32, Osprey Radial 26, 21.25, 12.99, 11.81, 3.02, Osprey Momentum 32, 19.68, 11.81, 11.41, 2.66, Osprey Momentum 26, 19.68, 11.81, 10.62, 2.38, Osprey Koby 20, 114.96, 10.62, 8.26, 0.97, Osprey Pogo 24, 14.96, 10.62, 8.26, 1.19, Osprey Flap Jack Pack, 18.89, 12.99, 9.44, 2.00, Osprey Flap Jack Courier, 14.96, 18.11, 9.84, 1.80, Osprey Flap Jill Micro, 9.44, 11.41, 3.54, 0.70, Osprey Flap Jill Courier, 12.59, 17.32, 8.66, 1.67, Osprey Flap Jill Mini, 11.41, 13.77, 7.48, 1.27, Osprey Flap Jill Pack, 17.71, 12.99, 9.05, 1.91, Osprey Farpoint 40, 21.25, 13.77, 9.05, 3.17, Osprey Farpoint 55, 25.59, 12.59, 12.59, 3.90, Osprey Farpoint 70, 25.59, 12.99, 13.38, 3.92, Osprey Farpoint 80, 29.13, 14.96, 15.74, 3.88, Osprey Fairview 40, 21.25, 13.77, 9.05, 3.17, Osprey Fairview 55, 24.8, 12.99, 11.81, 3.85, Osprey Fairview 70, 25.59, 13.77, 12.20, 3.88, Osprey Fairview 40, 21.25, 13.77, 9.05, 3.17, Osprey Fairview 55, 24.80, 12.99, 11.81, 3.85, Osprey Fairview 70, 25.59, 13.77, 12.20, 3.88, Osprey Transporter 40, 20.86, 12.20, 10.62, 2.66, Osprey Transporter 65, 23.62, 14.17, 12.59, 3.10, Osprey Transporter 95, 27.16, 14.56, 13.38, 3.50, Osprey Transporter 130, 31.88, 18.11, 14.56, 4.05, Osprey Trillium 45, 22.44, 11.81, 10.62, 1.52, Osprey Trillium 30, 20.07, 11.02, 8.66, 1.34, Osprey Trillium 65, 26.37, 12.20, 14.56, 1.74, Travelite Serie CAPRI Reisetasche, 17.71, 12.59, 10.62, 1.76, Travelite Serie FLOW Reisetasche L, 23.62, 12.59, 11.81, 2.86, Travelite Serie MINI-MAX Falt-Reisetasche L, 23.62, 13.38, 12.99, 1.10, Travelite Serie MINI-MAX Falt-Reisetasche M, 20.86, 12.20, 10.62, 0.88, Travelite Serie ORLANDO Reisetasche, 22.83, 11.81, 12.59, 1.98, """ all_types = [suitcases, backpacks] all_types_str = ['suitcases', 'backpacks'] criteria_str = ['price unavailable', 'price available'] # Pretend that we know this to avoid an additional loop max_values = {'width': 114.96, 'price': 749.0, 'height': 36.22, 'weight': 18.85, 'depth': 18.11} product_index = {} for type, type_str in zip(all_types, all_types_str): rows = type.split('\n')[1:-1] for row in rows: product_name, width_in, height_in, depth_in, weight_lbs, price_usd = row.split(', ') width_in = float(width_in) height_in = float(height_in) depth_in = float(depth_in) weight_lbs = float(weight_lbs) try: price_usd = float(price_usd) except ValueError: price_usd= -1 width_norm = width_in / max_values['width'] height_norm = height_in / max_values['height'] depth_norm = depth_in / max_values['depth'] weight_norm = weight_lbs / max_values['weight'] price_norm = price_usd / max_values['price'] criteria1 = (width_norm * height_norm * depth_norm) / weight_norm criteria2 = criteria1 / price_norm product_index[product_name] = (criteria1, criteria2) print(type_str.title()) for criteria_idx in range(2): print(criteria_str[criteria_idx]) for s in sorted(product_index.items(), key= lambda x: x[1][criteria_idx], reverse=True)[:15]: print("%.3f %s" % (s[1][criteria_idx], s[0])) print('\n') print('\n') ''' Suitcases price unavailable 0.454 Eagle Creek Cargo Hauler Rolling Duffel 120L 0.378 Osprey Rolling Transporter 120 0.367 Eagle Creek Cargo Hauler Rolling Duffel 90L 0.362 Samsonite Black Label Lite-Shock 30" Spinner 0.332 Samsonite Black Label Lite-Shock 28" Spinner 0.311 TravelPro T-Pro® Bold™ 2 Soft Duffel Bag 0.279 Samsonite Firelite 30" Spinner 0.276 Samsonite Black Label Lite-Cube DLX 31" Spinner 0.275 Travelite Serie KITE Trolley Reisetasche 0.258 Samsonite Uplite 29" Spinner 0.247 TravelPro Maxlite® 5 Soft Tote 0.244 Travelite Serie KITE 4-Rad Trolley L erw. 0.241 Osprey Rolling Transporter 90 0.240 Osprey Shuttle 130 0.239 Osprey Ozone 80 price available 2.648 TravelPro Maxlite® 5 Soft Tote 2.430 Eagle Creek Cargo Hauler Rolling Duffel 120L 2.328 TravelPro T-Pro® Bold™ 2 Soft Duffel Bag 2.115 Eagle Creek Cargo Hauler Rolling Duffel 90L 1.686 American Tourister Disney 18" Softside Upright 1.627 TravelPro Maxlite® 5 Bi-Fold Hanging Garment Bag 1.298 American Tourister Disney 18" Hardside Upright 1.264 TravelPro Crew 11™ Deluxe Tote 1.124 American Tourister Sunset Cruise 24" Spinner 1.081 American Tourister Sunset Cruise 28" Spinner 1.059 American Tourister Zoom 22" Wheeled Duffel 0.986 American Tourister Sunset Cruise 20" Spinner 0.868 Eagle Creek Expanse™ Drop Bottom Wheeled Duffel 32 0.851 TravelPro Maxlite® 5 Carry-On Rolling Duffel 0.824 American Tourister Curio 20" Spinner Backpacks price unavailable 2.599 Osprey Koby 20 1.613 Samsonite Tote-A-Ton Duffle Bag 0.933 Travelite Serie MINI-MAX Falt-Reisetasche L 0.768 Travelite Serie MINI-MAX Falt-Reisetasche M 0.758 Osprey Levity 60 0.683 Osprey Levity 45 0.683 Osprey Exos 58 0.673 Osprey Trillium 65 0.530 Briggs & Riley WEEKENDER 0.519 Osprey Transporter 130 0.508 Osprey Kestrel 68 0.501 Eagle Creek Cargo Hauler Duffel 60L / Medium 0.482 Osprey Kestrel 58 0.479 Osprey Xenith 105 0.474 Osprey Kyte 66 price available 30.198 Samsonite Tote-A-Ton Duffle Bag 4.172 Eagle Creek Cargo Hauler Duffel 60L / Medium 3.189 Eagle Creek Travel Bug Mini Backpack RFID 3.162 Eagle Creek XTA Backpack 2.956 Eagle Creek Load Hauler Expandable 2.909 Eagle Creek Expanse™ Hauler 2.648 TravelPro Maxlite® 5 Soft Tote 2.497 Samsonite Classic Business Perfect Fit Backpack 2.430 Eagle Creek Cargo Hauler Rolling Duffel 120L 2.328 TravelPro T-Pro® Bold™ 2 Soft Duffel Bag 2.228 Eagle Creek Afar Backpack 2.115 Eagle Creek Cargo Hauler Rolling Duffel 90L 2.031 Samsonite Andante 22" Wheeled Duffle 2.014 Eagle Creek Universal Traveler Backpack RFID 1.814 Briggs & Riley WEEKENDER '''

Some products have unknown prices, which makes them hardly comparable against others with known ones. For this reason, in each category (suitcases and backpacks), we use a subcategory to indicate whether price was taken in account or not, which gives us different results.

In the suitcase category we see that duffel bags (can be rolling) tend to dominate the first 15 positions. But they are often not the most sturdy. There are some spinners too, although we see that once price is included, they tend to fall further in the overall positioning. It then becomes clear that American Tourister has many affordable spinner models of good dimension and weight. We can also see quite well that price is the the factor contributing to the exclusion of the Samsonite's spinners from the second list.

The situation with backpacks is different. Here Osprey has many products ranking high when price is not considered. But this brand (not an exception) has not announced a single price on their website. This explains why none of its products appear on the second list.

Particularly striking is the model Osprey Koby 20, which is said to be a backpack for children, but has a modern design. It is extremely lightweight (440g) and has a relatively good volume (38 x 27 x 21 cm).

When we consider price, Eagle Creek XTA Backpack also looks nice and with 590g it is not considerably heavier. Samsonite also has the Classic Business Perfect Fit Backpack, which could be ideal for workers carrying around their laptop. At slightly over 1kg, it offers good volume (45.2 x 31.75 x 23.5 cm) and is currently available for 50$ at both Amazon and Samsonite.

Note, that many products have not been considered here. It is well possible that they have even better characteristics than the ones seen here. As always, try to reflect the data through your own judgement.

Despite mentioning the names of products here, this article stays away from recommending you any purchases.