Low Profile Hydration Pack keeps workers hydrated when they are away from water sources. Features, Durable 600D water-resistant rip stop polyester shell. Zip-up cap cover keeps debris and contaminants at bay. Insulated pack and tube keeps water cool. 100% anti-microbial bite valve with cover to protect against contaminants. Bite valve cover for protection from contaminants. Breakaway shoulder straps for added safety. Dual Cap bladder featuring smaller (60mm) cap nestled into larger (80mm) cap for easy water and ice filling. Capacity: 2L (2000ml) / 70oz / 2.2 hours.