Hydro Flask 21oz Standard Mouth

Hydro Flask 21oz Standard Mouth
  • Color: Mint
  • Color: Flamingo
  • Color: Blueberry
  • Color: Olive
  • Color: Black
  • Color: Lava
Please select options


The 21 oz is the perfect go-anywhere companion on your busiest days. It stashes easily in a small shoulder bag, your pack’s side pocket or your car cup holder, and holds enough to keep you going for hours without weighing you down. The 21 oz Standard Mouth is one of Hydro Flasks best selling vacuum insulated water bottles because of it's size and versatility.

  • 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
Volume621 mL
Mouth Diameter1.91"
Weight11.3 oz


Hydro Flask: Ready for Any Adventure

Part Numbers

Option UPC Store SKU
Mint 810497025765 HYD39164729T
Flamingo 817318023306 BOT533681069
Black 810497025680 HYD40299094K
Lava 810497025710 HYD39793574A