Lowe Alpine's daypacks cram in a lot of features into their compact size. The AirZone Active offers 18 litres of gear storage space, as well as a pole attachment, light loop, compression strap, key clip, stretch side pockets, hydration pockets, sternum strap, rain cover and multiple secure pockets. Impressively, the pack also comes equipped with an AirZone back system that keeps you cool, dry, and comfortable no matter how long you walk. AirZone LT lightweight, breathable suspended mesh carry system Internal zipped security pocket Zipped main opening Side compression straps Zipped top pocket Sternum strap with whistle Stretch water bottle side pockets Secure TipGripper walking pole attachments Front stash pocket for quick access Rain cover Hydration compatible - fits 3L bladder Key clip Light loop Volume: 18 Litres Weight: 0.77kg Back length: 46cm. It's always impressive how much tech Lowe Alpine manage to squeeze into their daypacks. With 18 litres of gear-stashing space, the AirZone Active comes equipped with a pole attachment, light loop, compression straps, key clip, stretch side pockets, hydration pocket, sternum strap, rain cover and multiple secure pockets. That's a lot of functionality! Saving the best feature until last, the pack also boasts an AirZone back system that keep you cool, dry and comfortable as you walk. AirZone LT lightweight, breathable suspended mesh carry system Internal zipped security pocket Zipped main opening Side compression straps Zipped top pocket Sternum strap with whistle Stretch water bottle side pockets Secure TipGripper walking pole attachments Front stash pocket for quick access Rain cover Hydration compatible - fits 3L bladder Key clip Light loop Volume: 18 Litres Weight: 0.77kg Back length: 46cm. 210D Ripstop Nylon with a HydroShield Water-resistant Coating - For lightweight, durable, weatherproof use. AirZone Lite - A layer of suspended mesh protects the back and allows for optimum ventilation. Shoulder Mesh and Chest and Wait Straps - Mesh on the shoulders provide grip and comfort during wear. Plenty of Pockets and a Key Clip - For secure storage on the go. Hydration Sleeve - Stores a water bladder.