For thru-hikers who want to push their limits and need lightweight, dependable gear for the trail, without sacrificing comfort.  Reduced to the essentials, this lightweight pack expertly balances comfort and weight, so you can devote more energy to the trail. The lid can also be detached to reduce overall weight. The new Air Spacer mesh performs three functions in one: Comfort, cushioning and ventilation. These attributes make this a weight-optimized backpack. With the addition of the Clip & Loop adjustable back length it also offers a tailored fit and superior carry comfort over longer distances. Depending on what you’re undertaking, the modular gear straps on this pack can be positioned to attach a range of items. deuter - Aircontact Ultra 50+5l Trekking Backpack tin shale