• silicone
• Water bottle mouthpiece:our bite valve replacement for water bottle is made of food-grade silicone material, it is recommended to replace the water bite valves every 3-6moths,silicone water bottle mouthpiece parts
• Bottle supplies:a good replacement for water bottle, use it to replace the broken or one,silicone bottle bite valves
• Water bottle reusable bite valve:our valves replacements for filter water bottle have the same performance as the original one,replacement parts
• Simple water bottle mouthpiece:strong sealing, prevent leakage, fit replacement parts, enough quantity, enough to use,bite valve
• Water bottle mouthpiece replacement:one-piece silicone bite valve self-seals to prevent leaks, precise size design to fit the bottle ,bite valves