What Our Gearhead(R) Experts Are Saying: "The Windrider 40L has become my go-to for fast and light trips. The mesh exterior pockets are awesome for drying out gear on the move and keeping snacks or layers accessible. The woven Dyneema fabric is bomber, waterproof, and way tougher than it looks-I've dragged it through brush and rocks without worry. It's the perfect balance of light, durable, and functional." The original ultralight pack from Hyperlite Mountain Gear, the Windrider 40L Backpack is built for adventurers who demand simplicity and strength in every mile. Crafted from fully woven Dyneema 200-denier fabric, this pack offers unmatched waterproofing and abrasion resistance while remaining incredibly lightweight. Seam taping, a roll-top closure, and streamlined compression keep our gear dry and secure from trailhead to summit. What sets the Windrider apart is its signature mesh exterior storage. Three redesigned, deep mesh pockets give us quick access to bottles, snacks, and layers while also drying out wet gear as we hike. Contoured aluminum stays, dual-density foam hip belt, and a curved back panel deliver stable, all-day comfort even when loaded near its 40-pound capacity. With hydration compatibility, removable straps, and a customizable carry system, the Windrider 40L thrives whether we're thru-hiking, fastpacking, or exploring rugged alpine terrain.