Gossamer Gear Mariposa 60 vs Gossamer Gear Murmur 36 Backpack
Weight and specs compared for 2026 — and which one to choose.
Ultralight 60L frameless pack with sit pad back panel.
Lightest frameless pack with welded ALUULA Graflyte fabric for ultralight backpacking.
Building a pack? Add either one to your HikeLoad list, or drop its weight into the base weight calculator, and see what it does to your total weight.
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Gossamer Gear Mariposa 60 vs Gossamer Gear Murmur 36 Backpack: which should you buy?
If saving weight is your priority, the Gossamer Gear Murmur 36 Backpack wins — at 303 g it is 665 g (69%) lighter than the Gossamer Gear Mariposa 60 (968 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.