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Hydro Flask 21 oz Standard Mouth Sport Cap

Hydro Flask 21 oz Standard Mouth Sport Cap
Hydro Flask 21 oz Standard Mouth Sport Cap
Hydro Flask 21 oz Standard Mouth Sport Cap
Hydro Flask 21 oz Standard Mouth Sport Cap
Hydro Flask 21 oz Standard Mouth Sport Cap
$35.95 Excl. tax
In stock

They're pretty much the perfect pair—our 21 oz Standard Mouth Bottle and our insulated Sport Cap. Together, they're your go-anywhere hydration companion. Read more..

  • Weekly Delivery in RI

    From our shop to your door
  • Curbside Pickup Available

    Select in-store pickup at checkout
  • Free Shipping for Orders +$149*

    *Excludes Kayaks/SUPs, oversize items

Hydration on the go.

They're pretty much the perfect pair—our 21 oz Standard Mouth Bottle and our insulated Sport Cap. Together, they're your go-anywhere hydration companion. 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
Size & Dimensions
21 oz Standard Mouth Sport Cap
Volume 621 mL
Mouth Diameter 1.91"
Diameter 2.81"
Height 10.4"
Weight 11.3 oz
21 oz Standard Mouth Sport Cap

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Weekly Delivery in RI
Curbside Pickup Available
Free Shipping for Orders +$149*