Liteway Biggie Pack Ultra 45L vs Osprey Stratos 36
Weight and specs compared for 2026 — and which one to choose.
Ultralight 45L pack at 570g. X-Pac fabric with roll-top design, waterproof upgrade available.
Full details →Ventilated 36L day and overnight pack with AirSpeed suspension.
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Liteway Biggie Pack Ultra 45L vs Osprey Stratos 36: which should you buy?
If saving weight is your priority, the Liteway Biggie Pack Ultra 45L wins — at 570 g it is 740 g (56%) lighter than the Osprey Stratos 36 (1,310 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.