Hydro Flask Standard Mouth 21oz with flex cap -
save 20%

£26.95 £21.56
In stock

Hydro Flask keeps cold drinks icy cold for 24 hours with its pro-grade stainless steel, BPA free construction - 21oz is perfect for short hikes, trips to gym and as an easy-to-carry size that's perfect for children.
End of line sale save 20% while stocks last

It stashes easily into a small shoulder bag, your pack’s side pocket, or your car cup holder, and holds enough ice cold goodness to keep you going for hours without weighing you down. No wonder it's one of Hydro Flask's bestselling water bottles.

Product Benefits

  • Versatile, middle-of-the-road size
  • 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 Standard Mouth Insulated Sport Cap
  • Lifetime Warranty
  • Size & Dimensions

21 oz


621 mL

Mouth Diameter







11.3 oz

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