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Change your plans without changing your bag. The Expandable Backpack starts as a weekender, then unzips for 20% more packing space when you need it. The flexible design “just works” for any short trip and pairs with a suitcase for longer adventures.
"Extremely comfy, carry-on friendly, and roomy." —Christopher, Verified Buyer
Carry-On-Sized
Easy to Pack
Comfortable to Carry
Built to Last
Yes, the Expandable Backpack is carry-on-compliant on most major airlines, even when it's expanded.
The bag is 19.2 x 12.5 x 6.9 inches (48.7 x 31.8 x 17.5 cm) when compressed and 19.2 x 12.5 x 8.3 inches (48.7 x 31.8 x 21 cm) when fully expanded. Always check your airline's carry on size limits before flying.
The Expandable Backpack is the perfect size (27-32.5L) for weekend trips. Light packers can carry it for up to a week when expanded.
Yes, the Expandable's padded, weight-bearing hip belt can transfer up to 80% of your bag's weight off of your shoulders, even when expanded and fully packed.
Choose the Expandable if you mostly take short trips or prefer a less-than-max-sized carry on. Shorter and more petite people often prefer the Expandable over our larger bags.
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