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Gossamer Gear Mirage 40 vs Gossamer Gear Murmur 36 Backpack

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

Gossamer Gear Murmur 36 Backpack is the lighter option — 302 g lighter than the Gossamer Gear Mirage 40 (57% less weight). If grams matter to you, that is the one to beat.
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Spec Gossamer Gear Mirage 40 Gossamer Gear Murmur 36 Backpack
Weight 527 g · 0.527 kg · 1.16 lb
total as listed; page names no sizes (torso 16-20 in)
 225 g · 0.225 kg · 0.50 lb
size one size, without torso pad (304 g with torso pad)
Brand Gossamer Gear Gossamer Gear
Category Backpack Backpack
Gossamer Gear Mirage 40
527 g

40L frameless ultralight pack crafted from ALUULA Graflyte fabric, one of the lightest full-featured backpacks available in 2026.

See it in your base weight → Full details →
Gossamer Gear Murmur 36 Backpack
225 g

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

See it in your base weight → Full details →

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Gossamer Gear Mirage 40 vs Gossamer Gear Murmur 36 Backpack: which should you buy?

If saving weight is your priority, the Gossamer Gear Murmur 36 Backpack wins — at 225 g it is 302 g (57%) lighter than the Gossamer Gear Mirage 40 (527 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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