This step is often overlooked, but can make all the difference in finding a properly fitted and comfortable backpack. Some backpacks are made for people with a specific torso size; others are adjustable.
Carry-on only. Minimalist and ultralight. Or maybe you plan to haul a bit more. Your packing goals will ultimately determine your perfect backpack size.
Picking your backpack size can be the hardest part of shopping for one. But, if you’ve assessed your packing goals, that will help narrow it down. And, once you narrow down the size, it will quickly narrow down your shopping options.
These small bags are for people who seriously want to travel ultralight, and hit carry-on under the toughest airline restrictions (like 7kg weight limits!).
Many round-the-world backpackers have traveled only with daypacks, between 30-50 liters, to avoid baggage fees and to travel light. Keep in mind that bags above 40L will only be carry-on size if they aren’t full and if they have a small frame.
You’ll certainly need to check this type of bag, but it can come in handy for long trips, or outdoorsy trips where you have to haul special equipment.