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Hydro Flask

Hydro Flask Standard Mouth Insulated Sports Cap

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An insulated sports cap compatible with all standard mouth Hydro Flask water bottles.

  • 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