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Gossamer Gear Murmur 36 Hyperlight Backpack vs Hyperlite Mountain Gear Pemi 15 Running Vest

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

Gossamer Gear Murmur 36 Hyperlight Backpack is the lighter option — 126 g lighter than the Hyperlite Mountain Gear Pemi 15 Running Vest (36% less weight). If grams matter to you, that is the one to beat.
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Spec Gossamer Gear Murmur 36 Hyperlight Backpack Hyperlite Mountain Gear Pemi 15 Running Vest
Weight 225 g · 0.225 kg · 0.50 lb 351 g · 0.351 kg · 0.77 lb
Brand Gossamer Gear Hyperlite Mountain Gear
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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Hyperlite Mountain Gear Pemi 15 Running Vest
351 g

Running vest using ALUULA Graflyte fabric for ultralight trail runners.

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Gossamer Gear Murmur 36 Hyperlight Backpack vs Hyperlite Mountain Gear Pemi 15 Running Vest: which should you buy?

If saving weight is your priority, the Gossamer Gear Murmur 36 Hyperlight Backpack wins — at 225 g it is 126 g (36%) lighter than the Hyperlite Mountain Gear Pemi 15 Running Vest (351 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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