Sip, zap, zoom! Keep your drink safe, cold, and clean with the Hydro Flask Standard Mouth Sport Cap. Keep your eyes on the prize as you hydrate with one hand, thanks to this cap. The first insulated sports cap is specifically designed to keep water in your Hydro Flask bottle ice cold, you’re sure to stay cool though all your activities. From yoga to mountain trail adventures, the Hydro Flask Standard Mouth Sport Cap holds on to the cold temperature of your drink, keeping it ready for you whenever.

Hydro Flask Standard Mouth Sport Cap features:

• Quiet, ‘no whistle’ valve enables easy sipping.
• Insulation brings enhanced temperature protection.
• Compatible with all standard mouth bottles.
• BPA-free and phthalate-free.

*Sport Cap is not intended for use with hot liquids and is not leakproof.