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Hyperlite Mountain Gear Prism 40L vs Hyperlite Mountain Gear Unbound 40

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

No winner on weight yet. The recorded weights have not both been verified on the same basis. Size, included parts and single-item versus pair weights can differ. Check the linked sources before choosing a replacement.

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Spec Hyperlite Mountain Gear Prism 40L Hyperlite Mountain Gear Unbound 40
Weight 827 g · 0.827 kg · 1.82 lb 830 g · 0.830 kg · 1.83 lb
Brand Hyperlite Mountain Gear Hyperlite Mountain Gear
Category Backpack Backpack
Hyperlite Mountain Gear Prism 40L
827 g

Technical alpine pack in DCH150 Dyneema with crampon pouch, ice tool carry, and removable lid. Load capacity up to 22kg.

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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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Hyperlite Mountain Gear Prism 40L vs Hyperlite Mountain Gear Unbound 40: which should you buy?

The listed weights alone are not enough to choose between these products. Confirm the size, included parts and weight basis against each source; choose equipment for the function and fit you need.

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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