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Fjallraven Kajka 55 vs Zpacks Nero Classic 40L
Weight and specs compared for 2026 — and which one to choose.
Zpacks Nero Classic 40L is the lighter option — 1,811 g lighter than the Fjallraven Kajka 55 (86% less weight). If grams matter to you, that is the one to beat.
Fjallraven Kajka 55
2,100 g
Classic 55L Swedish trekking pack with wooden frame stays.
Full details →Zpacks Nero Classic 40L
289 g
Frameless ultralight pack in 30L or 40L, built from Dyneema CF fabric. One of the lightest load-carrying packs available for thru-hiking.
Check price Full details →Fjallraven Kajka 55 vs Zpacks Nero Classic 40L: which should you buy?
If saving weight is your priority, the Zpacks Nero Classic 40L wins — at 289 g it is 1,811 g (86%) lighter than the Fjallraven Kajka 55 (2,100 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.