Ultimate Arms Gear Tactical ACU Army Digital Camouflage Hydration Backpack Carrier With 84 oz. Water Drinking Bladder Reservoir Capacity System BLADDER IS COMPLETE WITH HOSING AND HANDS FREE BITE-VALVE TACTICAL HYDRATION BACKPACK+ 2.5 LITER WATER BLADDER WITH HOSING NO ON/OFF VALVES-JUST BITE ON THE VALVE-PERFECT FOR HANDS-FREE OPERATION A FAVORITE WITH MILITARY - LAW ENFORCEMENT-HUNTERS-HIKERS SUPERIOR QUALITY PVC NYLON CONSTRUCTION