Liteway Biggie Pack Ultra 45L vs Osprey Exos 58 Backpack
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 →Lightweight ventilated backpack with AirSpeed suspended mesh back panel. Floating top lid, large front pocket. Great all-day comfort for summer hikes.
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Liteway Biggie Pack Ultra 45L vs Osprey Exos 58 Backpack: which should you buy?
If saving weight is your priority, the Liteway Biggie Pack Ultra 45L wins — at 570 g it is 706 g (55%) lighter than the Osprey Exos 58 Backpack (1,276 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.