Hydro Flask 21oz Standard Mouth

Hydro Flask 21oz Standard Mouth
  • Color: Pacific
  • Color: Graphite
  • Color: Mango
  • Color: Kiwi
  • Color: Mint
  • Color: Black
  • Color: Lava
  • Color: White
  • Color: Raspberry
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.

  • Easy to Transport
  • Versatile, middle-of-the-road size
  • TempShieldTM Protected
  • Keeps cold up to 24 hours
  • Keeps hot up to 12 hours
  • 18/8 Pro Grade Stainless Steel
  • BPA-Free and Phthalate-Free
  • Durable, sweat-free powder coat finish (or our Stainless option)
  • Lifetime Warranty
  • Compatible with Standard Mouth Insulated Sport Cap

Part Numbers

Option UPC Store SKU
Mango 810497025796 HYD40424891O
White 810497025697 HYD44845587