Black Diamond Beta Light 45L vs Fjällräven Kaipak 38
Weight and specs compared for 2026 — and which one to choose.
Lightweight 45-liter backpack designed for alpine and minimalist backpacking. Can be stripped to 650g by removing hip belt and internal stays.
Full details →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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Black Diamond Beta Light 45L vs Fjällräven Kaipak 38: which should you buy?
If saving weight is your priority, the Black Diamond Beta Light 45L wins — at 890 g it is 710 g (44%) lighter than the Fjällräven Kaipak 38 (1,600 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.