Hydro Flask Standard Mouth Classic Stainless Steel

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.

Easy to Transport

Versatile, middle-of-the-road size

TempShieldTM Protected

Keeps cold up to 24 hours

Keeps hot up to 6 hours

18/8 Pro Grade Stainless Steel

BPA-Free and Phalate-Free

Compatible with Standard Loop Cap and Sport Cap