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Hyperlite Mountain Gear 3400 Windrider vs Osprey Sirrus 36

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

Hyperlite Mountain Gear 3400 Windrider is the lighter option — 540 g lighter than the Osprey Sirrus 36 (44% less weight). If grams matter to you, that is the one to beat.
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Spec Hyperlite Mountain Gear 3400 Windrider Osprey Sirrus 36
Weight 680 g · 0.680 kg · 1.50 lb 1,220 g · 1.220 kg · 2.69 lb
Brand Hyperlite Mountain Gear Osprey
Category Backpack Backpack
Hyperlite Mountain Gear 3400 Windrider
680 g

Versatile Dyneema 55L pack with roll-top closure.

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Osprey Sirrus 36
1,220 g

Women's ventilated 36L pack with AirSpeed back panel.

Full details →

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Hyperlite Mountain Gear 3400 Windrider vs Osprey Sirrus 36: which should you buy?

If saving weight is your priority, the Hyperlite Mountain Gear 3400 Windrider wins — at 680 g it is 540 g (44%) lighter than the Osprey Sirrus 36 (1,220 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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