Good things come in small packages. The old adage is absolutely right on this occasion. A total of 18 litres of storage space is available within the AirZone Active, as well as a pole attachment, light loop, compression strap, key clip, stretchy side pockets, hydration pocket, sternum strap, rain cover, and multiple secure pockets. In addition, the pack includes an AirZone back system that keeps you cool, dry, and comfortable while you walk for hours on end.AirZone LT lightweight, breathable suspended mesh carry systemInternal zipped security pocketZipped main openingSide compression strapsZipped top pocketSternum strap with whistleStretch water bottle side pocketsSecure TipGripper walking pole attachmentsFront stash pocket for quick accessRain coverHydration compatible - fits 3L bladderKey clipLight loopVolume: 18 LitresWeight: 0.77kgBack length: 46cm