Specification:
Material: food grade silicone
Package content: 4 pcs food grade silicone bite valve replacement mouthpiece

Features:
These biting mouthpieces are made of food grade silicone, 100 per cent BPA and PVC free, no strange taste, no unnecessary or harmful chemicals. The soft mouthfeel allows you to drink with ease.
The large bite valve nipple provides hands-free hydration when you need it most, making it ideal for any high-performance situation. Regular replacement keeps your bite valve clean at all times.
Easy Installation. One-piece silicone design with no breakable moving parts, automatically seals after each drink to eliminate annoying drips, dishwasher safe.
Designed to fit all CamelBak or other water bag packs, from children to adults. Simply bite and sip, the Big Bite valve is designed to fit snugly on the end of the hydration tube and automatically seals after each drink to prevent leaks and spills.
Whether you're looking for an upgrade pack or a spare, this pack is the solution for your reservoir and hydration pack. With them, you don't have to throw away your entire water bag pack, which extends its lifespan. Risk-free full money back and exchange service guarantee.