CamelBak Big Bite Valve Cover Black. This Camelback Hydration Accessory works with all Camelbak Hydration Pack systems featuring the Big Bite Valve system. This valve cover from CamelBak helps keep your water valve clean and free of dust dirt ice etc. A full list of of Camelbak NSN numbers is available on the Camelbak NSN National/ NATO Stock Numbers page. We carry a complete line of CamelBak as well as other tactical gear from CamelBak. Don't miss our full selection of Hydration Packs from Camel-Back and other leading brands Specifications for CamelBak Hydrolink Big Bite Valve Cover: Manufacturer: CamelBak Color: Black Features of Camelbak Valve Cover for Big Bite Valve: Protects bite valve from dust dirt debris Helps prevents freeze-up in cold weather Package Contents: CamelBak Hydrolink Big Bite Valve Cover Camelbak Big Bite Valve Cover Black 60091