One-piece silicone design includes no moving parts to break
Big Bite Valve self-seals after each drink to eliminate annoying drips
Materials: Medical-grade silicone
The patented Big Bite Valve mouthpiece 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.
Cookie settings for the best A.S.Adventure online experience