If its time to replace or update the bite valve to your hydration reservoir, look no further than the freshly upgraded Replacement Bite Valve 2.0. The new lightweight Comet Bite Valve is self-sealing and can be opened and locked with one hand to prevent leaks while not in use. A dust cover protects the silicone valve from outside elements, while the parts are easily dissembled for convenient cleaning. The materials are both BPA and PVC free, and the lifetime no-leak warranty means that youll never be thirsty on a ride.Features:Hydrapak® Comet Bite ValveLight-weight, self-sealing bite valve can be opened and locked with one handEasy disassembly for cleaningBPA and PVC freeLifetime no-leak warranty