Gossamer Gear Kumo 36 Superlight vs Gossamer Gear Mirage 40
Weight and specs compared for 2026 — and which one to choose.
Frameless 36L ultralight pack in recycled Robic nylon, ideal for day hikes and minimalist overnight loads up to 25 lbs.
40L frameless ultralight pack crafted from ALUULA Graflyte fabric, one of the lightest full-featured backpacks available in 2026.
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 Kumo 36 Superlight vs Gossamer Gear Mirage 40: which should you buy?
If saving weight is your priority, the Gossamer Gear Mirage 40 wins — at 527 g it is 40 g (7%) lighter than the Gossamer Gear Kumo 36 Superlight (567 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.