Osprey 2 Liter Hydraulics(R) Reservoir is ideal for large-volume packs and long-duration activities. Thoughtful design makes filling, cleaning, and staying hydrated on the trail easier than ever. Hydrostatic backerplate provides structure to shove a full reservoir into a fully loaded pack and maintains a flat profile. Easy Slide-Seal top opening. Pour shield for controlling pouring into pots or bottles. Magnet clip attaches to the reservoir hose for easy water access and hose management. Complies with CPSIA, Prop 65. 3" W x 14" H x 6" L