Hydro Flask 21oz Standard Mouth

Hydro Flask 21oz Standard Mouth
  • Color: Pacific
  • Color: Pacific
  • Color: Jade
  • Color: Frost
  • Color: Cobalt
  • Color: Watermelon
  • Color: Black
  • Color: Graphite
  • Color: White
Please select options


Your perfect travel companion.
Keep life moving with our 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 our 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
Volume621 mL
Mouth Diameter   1.91"
Weight11.3 oz


Hydro Flask: Ready for Any Adventure

Part Numbers

Option UPC Store SKU
Pacific 810497025789 HYD42496899C
Jade 810911034533 BOT45648426E
Frost 810911034526 BOT4660740T
Cobalt 810497025703 BOT519193537
Watermelon 810911034571 BOT51879878N