The Citro 24 H2O employs wicking mesh on the VaporSpan ventilated suspension to keep your internal engine from overheating. Plus an included 3D Hydro Reservoir with the SpeedClip attachment system, and Drylock magnetic bite valve keeps water breaks moving. WEARABILITY 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 POCKETS, ACCESS, & HELPFUL ATTACHMENTS 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 HYDRATION 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