Gossamer Gear Murmur 36 Hyperlight Backpack vs Zpacks Arc Haul Ultra 60L

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

Gossamer Gear Murmur 36 Hyperlight Backpack is the lighter option — 285 g lighter than the Zpacks Arc Haul Ultra 60L (56% less weight). If grams matter to you, that is the one to beat.

Spec	Gossamer Gear Murmur 36 Hyperlight Backpack	Zpacks Arc Haul Ultra 60L
Weight	225 g · 0.225 kg · 0.50 lb	510 g · 0.510 kg · 1.12 lb
Brand	Gossamer Gear	Zpacks
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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Zpacks Arc Haul Ultra 60L

510 g

Ultralight framed Dyneema pack. One of the lightest framed packs.

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Gossamer Gear Murmur 36 Hyperlight Backpack vs Zpacks Arc Haul Ultra 60L: which should you buy?

If saving weight is your priority, the Gossamer Gear Murmur 36 Hyperlight Backpack wins — at 225 g it is 285 g (56%) lighter than the Zpacks Arc Haul Ultra 60L (510 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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