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The 2.2in opening on the Hydro Flask 18oz Wide Mouth Water Bottle allows for an easy transition of liquids, hot or cold, from your bottle into your belly.

  • Large (wide mouth) opening
  • Double wall vacuum insulated
  • Keeps hot up to 12 hours
  • Keeps cold up to 24 hours
  • BPA-free
  • 18/8 stainless steel
  • Signature powder coat

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Hydro Flask 18oz Wide Mouth Water Bottle

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Here's what others have to say...

5 5

The 10 year search is over

  • Familiarity: I've put it through the wringer

After ten years, I have found the most perfect travel coffee mug. Pair it with the flip lid and the GSI Java Drip (when they are back in stock!)

Hot drinks stay hot for a LONG time (sometimes too hot at first, so be wary if you want to drink immediately! This is the one "downside" to a mug that insulates SO WELL), and cold drinks stay cold WITHOUT sweating.