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Gregory Optic 48 vs Osprey Stratos 36
Weight and specs compared for 2026 — and which one to choose.
Osprey Stratos 36 is the lighter option — 60 g lighter than the Gregory Optic 48 (4% less weight). If grams matter to you, that is the one to beat.
Osprey Stratos 36
1,310 g
Ventilated 36L day and overnight pack with AirSpeed suspension.
Full details →Gregory Optic 48 vs Osprey Stratos 36: which should you buy?
If saving weight is your priority, the Osprey Stratos 36 wins — at 1,310 g it is 60 g (4%) lighter than the Gregory Optic 48 (1,370 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.