Perfect for those situations when you need a sip of water but don't really have a free hand to fiddle with a switch valve. Just put the Big Bite Valve in your mouth, bite, and drink away. The patented leak-free design will allow you to drink on the move without the anoying dripping when you're finished.
One-piece silicone design includes no moving parts to break
Big Bite Valve self-seals after each drink to eliminate annoying drips