Hydro Flask Sport Cap

Hydro Flask Sport Cap - From mountain trails to morning yoga classes – with the insulated sports cap for the Standard Mouth model bottles, you can always keep your hydration under control with one hand and on the go. It's the first insulated sports cap specifically designed to keep water in your Hydro Flask ice cold, sip after sip.

Features:

• Compatible with all Standard Mouth Model Bottles
• Insulated for increased temperature protection
• Quiet valve that does not “whistle”
• BPA free/Phthalate free
• The Sport Cap is not suitable for storing hot liquids and is not leak-proof