The Citro 30 H2O hauls gear, food, and water with ample room left over for layering as you gain altitude. VaporSpan free-flowing ventilation keeps you cool and the included 3D Hydro Reservoir keeps you hydrated.. . . . . Soft Molded, 3D Hydro Reservior Included with integrated drying hanger. Drylock Magnetic bite valve attachment system allows for one-handed magnetic buckling of the sternum strap. VaporSpan ventilated suspension with moisture-wicking mesh and ActiveFlex harness. Includes 3D Hydro quick-drying, soft molded reservoir (3 Liter) with integrated handle and drying hanger. Dedicated 3/4 zippered hydration sleeve with SpeedClip hydration hanger for a one-handed, snap-and-go connection. Breathable ActiveFlex shoulder harness with magnetic sternum buckle and hose clip for the Drylock bite valve.. VaporSpan ventilated suspension with moisture-wicking mesh and perimeter alloy frame. 3D cradle padded hipbelt with large zippered pockets. Sunglass QuickStow system on shoulder harness for quick, secure and scratch-free access to your shades. Top zippered pocket with padded, soft touch liner to protect valuable items. Interior zippered mesh security pocket with key clip. Front stretch and dual side mesh pockets for quick storage. Trekking pole / tool attachment point with bungee closure system. Custom comfort-grip molded zipper pulls. Ideal Fit For Men. Actvity: Day Hiking / Hydration. Internal Frame: Yes. Frame Type: Perimeter wire. Suspension Technology: VAPORSPAN. Compartment Access: Panel. Closure Type: Zipper. Number of External Pockets 5. Hydration Compatible. Hydration Reservoir Included. Hipbelt Included . Hipbelt Pockets . Trekking Pole Attachment . Fits Torso: 16 in. - 21 in.