Hyperlite Mountain Gear Unbound 40 vs Salomon ADV Skin 12

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

Salomon ADV Skin 12 is the lighter option — 570 g lighter than the Hyperlite Mountain Gear Unbound 40 (69% less weight). If grams matter to you, that is the one to beat.

Spec	Hyperlite Mountain Gear Unbound 40	Salomon ADV Skin 12
Weight	830 g · 0.830 kg · 1.83 lb	260 g · 0.260 kg · 0.57 lb
Brand	Hyperlite Mountain Gear	Salomon
Category	Backpack	Backpack

Hyperlite Mountain Gear Unbound 40

830 g

40L Dyneema Composite Hybrid pack with internal frame and waterproof roll-top closure. Built for alpine and storm-prone conditions.

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Salomon ADV Skin 12

260 g

Ultra-light 12L trail running and fastpacking vest.

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Hyperlite Mountain Gear Unbound 40 vs Salomon ADV Skin 12: which should you buy?

If saving weight is your priority, the Salomon ADV Skin 12 wins — at 260 g it is 570 g (69%) lighter than the Hyperlite Mountain Gear Unbound 40 (830 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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