Hyperlite Mountain Gear Windrider 40 vs Lowe Alpine AirZone Active 18
Weight and specs compared for 2026 — and which one to choose.
100% waterproof Dyneema pack with sewn-through back panel and internal frame stay. 40L volume, three exterior mesh pockets for wet gear.
Full details →Lightweight 18-liter daypack for hiking and outdoor activities. Features ergonomic back panel, padded straps and adjustable capacity from 18-20 liters.
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Hyperlite Mountain Gear Windrider 40 vs Lowe Alpine AirZone Active 18: which should you buy?
If saving weight is your priority, the Lowe Alpine AirZone Active 18 wins — at 770 g it is 74 g (9%) lighter than the Hyperlite Mountain Gear Windrider 40 (844 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.