Take your drink on-the-go with the Hydro Flask 21oz Standard Sport Cap!
This insulated cap is perfect for school, work, and workouts. Keep your drink ice-cold and start sippin' like a pro!
- Versatile, middle-of-the-road size, equipped with our insulated Sport Cap
- TempShieldTM insulation eliminates condensation and keeps beverages cold up to 24 hours and hot up to 12 hours
- Durable 18/8 Pro-Grade Stainless Steel construction
- BPA-Free and Phthalate-Free
- Compatible with our Standard Mouth Flex Cap
- Sport Cap is not intended for use with hot liquids and is not leakproof
