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21OZ STANDARD SPORT LID

From mountain trails to morning yoga class, our Standard Mouth Insulated Sport Cap lets you hydrate one-handed and on the fly. It's the first insulated sport cap specifically designed to keep water in your Hydro Flask bottle ice cold, sip after sip.

Compatible with all Standard Mouth bottles

Insulated for enhanced temperature protection

Quiet, "no whistle" valve

BPA-Free and Phthalate-Free

Sport cap is not intended for use with hot liquids and is not leakproof

 

 

 

 

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