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Hydro Flask 21oz Standard Mouth Flex Cap

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Quick Overview

The Hydro Flask 21oz is a great size for everyone, not too big, but offering plenty of fluid carrying capacity. It is stylish and practical and the standard width mouth is a great choice for many...

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Our View - Hydro Flask 21oz Standard Mouth Flex Cap:

The 21oz Hydro Flask is an insulated drinks bottle with a Standard width mouth for no fuss drinking on the go. The Flex Loop cap is a great design being easy to use and carry but also folds out of the way for neatness when not needed. The top is also compatible with the Standard mouth Sports Cap so you turn the bottle into a quick drink solution too. Ideal for taking to school, work or gym this will keep your drink hot and cold.

Specifications - Hydro Flask 21oz Standard Mouth Flex Cap:

  • Easy to Transport
  • Versatile, middle-of-the-road size
  • TempShieldTM Protected
  • Keeps cold up to 24 hours
  • Keeps hot up to 12 hours
  • 18/8 Pro Grade Stainless Steel
  • BPA-Free and Phthalate-Free
  • Durable, sweat-free powder coat finish (or our Stainless option)
  • Lifetime Warranty
  • Compatible with Standard Mouth Insulated Sport Cap
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