621ml / 21oz Standard w/ Flex Straw Cap Color:Cactus This is the lightest

This is the lightest

warm and wicking grid back fleece crafted with thermo-regulating ActiveTemp™ technology to manage body temperature in quickly changing climates

From the golf course to happy hour with friends

you’ll feel more propulsion without tiring yourself out

Buttons made from recycled polyester

621ml / 21oz Standard w/ Flex Straw Cap Color:Cactus This is the lightestKeep life moving with Hydro Flask's 21 oz bottle and Standard Flex Cap. It stashes easily into a small shoulder bag, your packs 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.