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Gossamer Gear Murmur 36 Hyperlight Backpack vs Osprey Levity 45

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

Gossamer Gear Murmur 36 Hyperlight Backpack is the lighter option — 575 g lighter than the Osprey Levity 45 (72% less weight). If grams matter to you, that is the one to beat.
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Spec Gossamer Gear Murmur 36 Hyperlight Backpack Osprey Levity 45
Weight 225 g · 0.225 kg · 0.50 lb 800 g · 0.800 kg · 1.76 lb
Brand Gossamer Gear Osprey
Category Backpack Backpack
Gossamer Gear Murmur 36 Hyperlight Backpack
225 g

Frameless 36L hyperlight thru-hiking pack made from ALUULA Graflyte fabric, with roll-top closure and included torso pad.

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Osprey Levity 45
800 g

Ultralight 45L pack at 800g. Designed for minimalist backpackers with Nanofly ripstop and Lightwire frame.

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Gossamer Gear Murmur 36 Hyperlight Backpack vs Osprey Levity 45: which should you buy?

If saving weight is your priority, the Gossamer Gear Murmur 36 Hyperlight Backpack wins — at 225 g it is 575 g (72%) 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.

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