Profile Design Bite Valve II Description: This Profile Design Bite Valve II works to replace or repair bite valves found originally equipped on Profile Design aero waterbottles including Aeria, Aerodrink 880 and more. A self sealing design works to prevent the leakage of fluid contained within water bottles. Soft construction creates a better user experience when using straws, enabling control of fluid when drinking. Features: Replacement Bite Valve for Profile Design aero water bottles Self-sealing design eliminates fluid drips Soft user interface enables better fluid control when drinking Compatible with: Aeria HSF / Aero HC 800+ HSF Aerodrink 880 FC25 FC35 Aero HC Aerodrink Aqualite Aqua Cell Straws Specifications: Material: Food Safe/BPA Free Silicone and Dishwasher Safe