Description Bite, Sip and Go! The best bite valve on the market in four fun colors. Automatically seals, just bite and sip. Personalize your packs and have spares on hand for emergencies. FEATURES Self-seals after each drink to eliminate annoying drips. Patented one-piece silicone design. Fits all CamelBak reservoirs. Includes 4 colored Big Bite valves.