Source Widepac 3L Hydration Reservoir System. Liquid Capacity 100 oz. (3L)Drinking System. 16.73”L X 8.46”W Empty weight: .275 lbs. High performance 3L hydration reservoir system. Exclusive 3 layer coextruded Polyethylene construction with taste-free, maintenance-free Glass-Like liner. Integrated Grunge-Guard antimicrobial. Patented leakproof slide wide opening for easy cleaning, draining, ice insertion. Self sealing SQC quick disconnect hose is detachable from filled reservoirs with no leakage. Exclusive Helix bite valve delivers high flow with minimal bite pressure. Omnidirectional. Integrated twist shut-off. Protective Dirt Shield valve cover.