But what if you have neither? Can you use any kind of bag, like a backpack, as a carry-on? Yes, but it depends on the weight ...

Size and weight still matter. If you desire more creature comforts or more gear, or if you plan to be away for a long time across multiple climates, you should choose a bigger travel backpack.

with many calling it the “perfect size” while praising its “well thought out” design. Get It This Filson duffel bag-backpack combo combines the classic looks of the brand's storied bags ...