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Hydro Flask 21 Oz Standard Mouth Trail Ultralight With Flex Cap

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The 21 oz Ultralight Titanium Trail Series™ bottle is 35% lighter than our other 21 oz bottles thanks to a premium titanium design. Engineered to deliver the same cold refreshment you expect but without the weight, the Trail Series™ makes it easy to take your cold hydration as far as your spirit of adventure takes you.

  • 35% lighter than our other 21 oz bottles means this ultralight titanium bottle weighs less so you can do more.
  • Our first ever titanium construction makes this the lightest vacuum insulated bottle on the market.
  • Titanium standard mouth cap with flexible perforated strap and titanium pivots cut weight in our leakproof design.
Product Benefits
  • Titanium construction
  • Ideal for ultralight hydration to keep you going further
  • TempShield™ insulation keeps beverages cold up to 24 hours and hot up to 12 hours
  • Flexible perforated strap and titanium pivots for added weight loss
  • BPA-Free and Phthalate-Free
  • Compatible with Standard Mouth Insulated Sport Cap