How many cm is a backpack?

Small backpack size: 40-44cm torso length and 55-69cm hip width. Medium backpack size: 45-49cm torso length and 70-87cm hip width. Large backpack size: 50-52cm torso length and 88-100cm hip width. Extra-large backpack size: >53 torso length and >101cm hip width.



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Measuring 17 x 12 x 9 inches, the 17 Inch Backpack has a just-right size that's perfect for packing all the essentials, plus some snacks!

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American Airlines According to airline policy, any personal items stowed beneath seats should not exceed 18 inches by 14 inches by 8 inches.

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The 15 Inch back pack's just-right size means you can bring the school supplies AND your favorite snack. Measuring 15 x 11 x 7 inches, these waterproof backpacks for teen girls and boys are perfect for school, practice, and travel.

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21–35 liters: This is the sweet spot for most hiking and travel daypacks. There's enough capacity to hold food, clothing and some extras, like a camera and a book. 36–50 liters: These larger packs are ideal for trips that require additional clothing and gear, such as climbing, mountaineering or non-summer hiking.

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24-26 liters is considered a medium-size backpack and is probably the most popular bag capacity out there. It's great for taking to school or work, depending on the styling, and can also be a great travel pack for taking on a plane. Here is a potential packing list for that size depending on where you're headed.

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The short answer: Yes, a backpack is generally considered a personal item if it fits under the seat in front of you.

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As a general rule of thumb, anything smaller than the dimensions of a carry-on can be considered a personal item. However, every airline has different restrictions for size. In most cases, your backpack should be no more than 18 x 14 x 8 inches.

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MEDIUM BACKPACKS (20 – 35L) It's great for taking to school or work, depending on the styling, and can also be a great travel pack for taking on a plane.

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You can always go smaller, but I wouldn't recommend anything smaller than 35L — unless you're into minimalist travel. The length of your trip really doesn't make much of a difference when it comes to choosing a backpack — so don't buy a huge backpack because you're going on a 6-month journey.

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A 50L+ backpack is a great friend to those travelling for a few weeks. These bags are spacious and can accommodate a number of outfit changes before you ever have to visit a laundromat. But don't be tempted to fill your pack to its capacity before you've even left - remember to save space for souvenirs!

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