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Hydro Flask 21 Oz Standard Mouth with Sport Cap

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The Hydro Flask 21 oz equipped with Standard Mouth Insulated Sport Cap is the perfect go-anywhere companion on your busiest days. It stashes easily in a small shoulder bag, your pack's side pocket or your car cup holder, and holds enough to keep you going for hours without weighing you down.
  • Product Benefits

    • Versatile, middle-of-the-road size, equipped with our insulated Sport Cap
    • TempShield™ 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
    • Lifetime Warranty
    • Sport Cap is not intended for use with hot liquids and is not leakproof