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Fjällräven Kaipak 38 vs Osprey Atmos AG 65

Weight and specs compared for 2026 — and which one to choose.

Fjällräven Kaipak 38 is the lighter option — 580 g lighter than the Osprey Atmos AG 65 (27% less weight). If grams matter to you, that is the one to beat.
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Spec Fjällräven Kaipak 38 Osprey Atmos AG 65
Weight 1,600 g · 1.600 kg · 3.53 lb 2,180 g · 2.180 kg · 4.81 lb
Brand Fjällräven Osprey
Category Backpack Backpack
Fjällräven Kaipak 38
1,600 g

38L trekking backpack made from recycled polyester and organic cotton G-1000 fabric. Features supportive carrying system with removable waist belt and snow lock...

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Osprey Atmos AG 65
2,180 g

Full-featured 65L pack with Anti-Gravity suspension. Ideal for extended trips.

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Fjällräven Kaipak 38 vs Osprey Atmos AG 65: which should you buy?

If saving weight is your priority, the Fjällräven Kaipak 38 wins — at 1,600 g it is 580 g (27%) lighter than the Osprey Atmos AG 65 (2,180 g). That said, the heavier option may justify the extra grams with more capacity, durability or comfort, so weigh the trade-off against how you'll use it.

See where both rank against everything else in this category on the lightest backpack page, or browse the full gear weight database.

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