The Cloud Walker 18 hike pack is redesigned with equal parts technical and functional to create the perfect day or play solution. Features: Air Support Back Panel: Designed with Body Mapping Technology to allow for maximum ventilation on the hottest areas of your back Side cargo pockets and compression straps Removable Waist Strap: Added stability when you need it Secure Phone Pocket: Conveniently located with a zipper closure for secured quick access Trekking Pole Carry: Easily remove or replace poles while running Specifications User Group: Men BPA/BPS/BPF FREE: Yes Dimensions: 46 x 26 x 23cm Torso Fit Range: 15 -19 inches Belt Fit Range: 26 - 46 inches Pack Weight: 500g Gear Capacity: 15.5L Cargo Capacity: 6L Back Panel: Air Support Hydration Capacity: 2.5L / 85oz Hydration Type: CRUX Reservoir (please note no quicklink) Quick Link: No Material: Nylon