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Hydro Flask 21oz Standard Mouth

Hydro Flask 21oz Standard Mouth
  • Color: Olive
  • Color: Black
  • Color: Stone
  • Color: White
  • Color: Spearmint
  • Color: Cobalt
  • Color: Pacific
  • Color: Watermelon
  • Color: Hibiscus
Please select options


Your perfect travel companion.

Keep life moving with the 21 oz bottle and Standard Flex Cap. 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 the bestselling water bottles.

Product Benefits

  • Versatile, middle-of-the-road size
  • TempShieldTM 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
Volume621 mL
Mouth Diameter1.91"
Weight11.3 oz


  • Standard Mouth Flex Cap


Hydro Flask: Ready for Any Adventure

Part Numbers

Option UPC Store SKU
Stone 810007834818 BOT46855837E
Spearmint 810007834856 BOT5040901T
Cobalt 810497025703 BOT519193537
Hibiscus 810007834832 BOT49654211S