Venturer Hydration Systems, a Rothco exclusive, name brand features at a discount price, spring-hinged bite valve, detachable hose, easy-fill bladder, 600 denier Polyester construction, Nylon lining, padded mesh back, vinyl-lined padded Adjustable Shoulder Straps, waist Straps, top carry Handle, YKK zippers & buckles 17" x 8"