What Our Gearhead(R) Experts Are Saying: "The Exos 58 hits the sweet spot for thru-hikers-big enough for multi-day missions, but still incredibly light and breathable. The Airspeed suspension keeps the load off your back, and the smart pocket layout makes packing for long days surprisingly simple."From alpine traverses to desert trails, the Osprey Exos 58L Backpack gives us ultralight comfort for big-mile days. Its Airspeed suspension system uses a tensioned mesh back panel to promote airflow and keep sweat in check while distributing weight evenly for stable carrying. The 58-liter capacity is ideal for extended backpacking trips or minimalist thru-hikes, while durable recycled ripstop nylon resists abrasion along rocky switchbacks. Thoughtful details like the Stow-on-the-Go trekking pole attachment, removable sleeping pad straps, and streamlined compression points make trail life easier, and a FlapJacket top flap protects gear when the lid's removed.