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Gossamer Gear Murmur 36 Backpack vs Osprey Atmos AG 50

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

Gossamer Gear Murmur 36 Backpack is the lighter option — 1,597 g lighter than the Osprey Atmos AG 50 (84% less weight). If grams matter to you, that is the one to beat.
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Spec Gossamer Gear Murmur 36 Backpack Osprey Atmos AG 50
Weight 303 g · 0.303 kg · 0.67 lb 1,900 g · 1.900 kg · 4.19 lb
Brand Gossamer Gear Osprey
Category Backpack Backpack
Gossamer Gear Murmur 36 Backpack
303 g

Lightest frameless pack with welded ALUULA Graflyte fabric for ultralight backpacking.

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Osprey Atmos AG 50
1,900 g

Versatile 50L Anti-Gravity pack for multi-day adventures.

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Gossamer Gear Murmur 36 Backpack vs Osprey Atmos AG 50: which should you buy?

If saving weight is your priority, the Gossamer Gear Murmur 36 Backpack wins — at 303 g it is 1,597 g (84%) lighter than the Osprey Atmos AG 50 (1,900 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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