The industry-leading bite valve just got better with the Dakine Replacement Bite Valve 2. 0. Featuring the lightweight, self-sealing Hydrapak Comet Bite Valve, this upgrade prevents leaks and offers one-handed operation, so we can lock and unlock it with ease. Whether we're replacing a worn-out valve or upgrading the hydration system, the BPA- and PVC-free materials ensure a safe, clean drink every time. With its dust cover and easy disassembly for cleaning, we're always ready to hydrate on our ride.