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Gregory Zulu 65 vs Osprey Stratos 36

Weight and specs compared for 2026 — and which one to choose.

Osprey Stratos 36 is the lighter option — 370 g lighter than the Gregory Zulu 65 (22% less weight). If grams matter to you, that is the one to beat.
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Spec Gregory Zulu 65 Osprey Stratos 36
Weight 1,680 g · 1.680 kg · 3.70 lb 1,310 g · 1.310 kg · 2.89 lb
Brand Gregory Osprey
Category Backpack Backpack
Gregory Zulu 65
1,680 g

Ventilated 65L backpacking pack ideal for warm conditions.

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Osprey Stratos 36
1,310 g

Ventilated 36L day and overnight pack with AirSpeed suspension.

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Gregory Zulu 65 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 370 g (22%) lighter than the Gregory Zulu 65 (1,680 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.

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