Gossamer Gear Murmur 36 Hyperlight Backpack vs Liteway Biggie Pack Ultra 45L
Weight and specs compared for 2026 — and which one to choose.
Frameless 36L hyperlight thru-hiking pack made from ALUULA Graflyte fabric, with roll-top closure and included torso pad.
Full details →Ultralight 45L pack at 570g. X-Pac fabric with roll-top design, waterproof upgrade available.
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Gossamer Gear Murmur 36 Hyperlight Backpack vs Liteway Biggie Pack Ultra 45L: which should you buy?
If saving weight is your priority, the Gossamer Gear Murmur 36 Hyperlight Backpack wins — at 225 g it is 345 g (61%) lighter than the Liteway Biggie Pack Ultra 45L (570 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.