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  • Hydro Flask Hydro Flask Standard Flex Cap 21oz Lupine
  • Hydro Flask Hydro Flask Standard Flex Cap 21oz Lupine
  • Hydro Flask Hydro Flask Standard Flex Cap 21oz Lupine

Hydro Flask Standard Flex Cap 21oz Lupine

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Keep life moving with Hydro Flask's 21 oz bottle and Standard Flex Cap. It stashes easily into a small shoulder bag, a pack’s side pocket, or a car cup holder, and holds enough ice cold goodness to keep them going for hours without weighing them down.

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Hydro Flasks’ unique double wall vacuum insulation protects temperature for hours. Cold drinks stay icy cold and warm drinks stay warm so your little one can stay refreshed for any adventure!

Product Benefits

  • For ages 3+
  • TempShield®️ double-wall vacuum insulation keeps drinks cold up to 24 hours, hot up to 12
  • Flex Cap is leakproof when closed
  • Honeycomb™️ Insulated Cap for maximum temperature retention
  • Made with 18/8 pro-grade stainless steel for durability, pure taste and no flavor transfer
  • Color Last™ powder coat is durable, sweat-free and colorful
  • BPA-Free
  • Dishwasher safe
  • Not for use on a stove, in a microwave or freezer

Size & Dimensions

Volume - 21oz / 621ml

Dimensions - 2.85" D x 11.15" H

Weight - 0.75 lb


  • This product is not intended for children under 3 years of age.
  • Discard and replace at first sign of weakness or damage.
  • Do not use with carbonated or pulpy beverages.
  • Do not let child run while carrying bottle.
  • Keep small parts out of reach of children
Hydro flask / water bottle
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