Gossamer Gear Kumo 36 Superlight vs Zpacks Arc Scout 37L

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

Zpacks Arc Scout 37L is the lighter option — 24 g lighter than the Gossamer Gear Kumo 36 Superlight (6% less weight). If grams matter to you, that is the one to beat.

Spec	Gossamer Gear Kumo 36 Superlight	Zpacks Arc Scout 37L
Weight	414 g · 0.414 kg · 0.91 lb	390 g · 0.390 kg · 0.86 lb
Brand	Gossamer Gear	Zpacks
Category	Backpack	Backpack

Gossamer Gear Kumo 36 Superlight

414 g

Frameless 36L ultralight pack in recycled Robic nylon, ideal for day hikes and minimalist overnight loads up to 25 lbs.

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Zpacks Arc Scout 37L

390 g

Compact Dyneema frameless pack for lightweight overnighters.

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Gossamer Gear Kumo 36 Superlight vs Zpacks Arc Scout 37L: which should you buy?

If saving weight is your priority, the Zpacks Arc Scout 37L wins — at 390 g it is 24 g (6%) 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.

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