Black M.O.L.L.E. 3-Liter Backpack Hydration System Constructed of 900 Denier polyester with a 3 liter polyurethane bladder and a stretch fabric covered hose. Includes front flap with hook and loop closure and MOLLE attachment straps. Constructed of 600 Denier polyester with a 3 liter polyurethane bladder and a stretch fabric covered hose. Includes on/off switch, and front screw cap. Item is MOLLE compatible. SKU: 2830. Manufactured by Rothco.