Description

Keep life moving with the Hydro Flask 21 oz bottle and standard flex cap. It stows easily in a small shoulder bag, in the side pocket of your backpack, or in the cup holder of the car, and provides enough ice-cold refreshment to keep you moving for hours without weighing you down. No wonder it’s one of Hydro Flask’s best-selling water bottles.
Highlights of the Hydro Flask 21 oz Standard Mouth insulated flask

TempShield™

Unique double-wall vacuum insulation protects temperature for hours. Cold drinks stay ice cold and hot drinks stay hot, so you can stay refreshed for any adventure.
Pro-Grade Stainless Steel

Made of 18/8 pro-grade stainless steel to ensure pure flavor and no flavor transfer – and the durable construction stands up to anything life throws at it.
Proprietary Powder Coating

Proprietary powder coating means a non-slip, sweat-free, extra-durable bottle you can take anywhere.

 
Product benefits of the Hydro Flask 21 oz Standard Mouth Thermal Bottle – 621ml

Versatile, medium size
TempShield™ insulation eliminates condensation and keeps drinks cold for up to 24 hours and hot for up to 12 hours
Durable 18/8 pro-grade stainless steel construction
BPA-free and phthalate-free
Compatible with standard sports cap with mouthpiece insulation
Fits in bottle cage