Adds on-the-go drinkability and added cold retention to any standard-opening Hydro Flask.

Keep hydration in hand with Hydro Flask's Insulated Sport Cap. When paired with a Hydro Flask filled with cool water, the new insulated design makes it easy to get a cold sip, one handed, time after time. Whether on the trail or at the gym, Hyrdo Flasks Sport Cap makes hydration easy.

• Insulated: Helps cold drinks keep cool, sip after sip
• Standard Size: Use with any standard-size Hydro Flask bottle
• Lifetime Warranty: Your lid is guaranteed to help hydrate
• Safe: Made from BPA- and Phthalate-free material