Hyperlite Mountain Gear 3400 Windrider vs Hyperlite Mountain Gear Unbound 40
Weight and specs compared for 2026 — and which one to choose.
Versatile Dyneema 55L pack with roll-top closure.
Full details →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 3400 Windrider vs Hyperlite Mountain Gear Unbound 40: which should you buy?
If saving weight is your priority, the Hyperlite Mountain Gear 3400 Windrider wins — at 680 g it is 150 g (18%) 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.