Includes 1L (32oz) Reversible Reservoir II Water Bladder Hydration Drink System Reservoir Includes 36" Big Bore Drink Tube, Plug-N-Play Quick Disconnect, 45deg Surge Bite Valve. * Weighs just a mere 9.9 ounces * Features 2 Exapandable front zippered pockets and 4 holsters on the front straps. * Rear pouch can carry the included 1L reservoir or can be used for light storage * Ultra-Light Weight materials