Gossamer Gear Mirage 40 vs Osprey Levity 45
Weight and specs compared for 2026 — and which one to choose.
40L frameless ultralight pack crafted from ALUULA Graflyte fabric, one of the lightest full-featured backpacks available in 2026.
Full details →Ultralight 45L pack at 800g. Designed for minimalist backpackers with Nanofly ripstop and Lightwire frame.
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Gossamer Gear Mirage 40 vs Osprey Levity 45: which should you buy?
If saving weight is your priority, the Gossamer Gear Mirage 40 wins — at 550 g it is 250 g (31%) lighter than the Osprey Levity 45 (800 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.