What size backpack do I need?
Backpack capacity is measured in liters, and the right number depends on how long you're out, the season, and how much comfort versus weight you want. Answer the three questions below and we'll recommend a liter range — then point you to the buying guide for that size.
Pick one from each row.
Recommended capacity
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General planning guidance based on common hiking practice and published manufacturer sizing — not a substitute for your own judgment, a proper gear shakedown, or professional instruction on backcountry safety. Always check current conditions before you head out.