The patented Big Bite™ Valve one piece silicon mouth-piece offers Hands-Free Hydration and is ideal for any high performance situations. Easy to use - just bite and sip! Self-seals after each drink to eliminate annoying drips.
 
Valve Cover - This must-have accessory provides a great way to keep your Big Bite Valve clean and protected. Works with HydroLock, Ergo HydroLock and Ergo Angle. Will not work directly on tube.