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