Gossamer Gear Kumo 36 Superlight vs Zpacks Nero Classic 40L
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.
Check price Full details →Frameless ultralight pack in 30L or 40L, built from Dyneema CF fabric. One of the lightest load-carrying packs available for thru-hiking.
Check price Full details →Gossamer Gear Kumo 36 Superlight vs Zpacks Nero Classic 40L: which should you buy?
If saving weight is your priority, the Zpacks Nero Classic 40L wins — at 289 g it is 125 g (30%) lighter than the Gossamer Gear Kumo 36 Superlight (414 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.