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    Hydro Flask

    Sip. Refresh. Go.

    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.

    Product Benefits

    • 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
    • Lifetime Warranty