What Our Gearhead(R) Experts Are Saying: "The Sirrus 24 hits that perfect sweet spot for day hikes-light, supportive, and full of smart storage. The AirSpeed suspension keeps air moving on hot climbs, and the women's-specific fit really distributes the weight comfortably. Plus, the included rain cover has saved me more than once mid-hike." When we're chasing elevation or logging miles on rugged trails, the Osprey Sirrus 24L Backpack keeps our load stable and our back cool. Purpose-built for women, this pack blends ergonomic comfort with weatherproof confidence for everything from fast day hikes to spontaneous peak missions. Its AirSpeed(TM) suspension system uses a 3D-tensioned mesh backpanel to deliver incredible ventilation and load support, keeping us dry and balanced through long climbs. The women's-specific fit contours naturally, while the panel-loading design makes organizing layers, snacks, and essentials effortless. A built-in rain cover protects gear when weather turns, and the Stow-on-the-Go trekking pole system means we never have to stop moving when the terrain shifts. Sustainably crafted from 100% recycled, bluesign(R)-approved materials, the Sirrus 24 combines comfort, function, and environmental responsibility in one sleek trail companion.