UltraFlask Speed 600ml Soft Flask - Lightweight Hydration for Running, Hiking & Outdoor Activities | BPA-Free Water Bottle

The Hydrapak UltraFlask Speed 600 ml allows you to drink on the go. Its soft material allows it to fit snugly in most vest pockets and it shrinks as you drink to minimize water movement.

The SpeedFill™ cap flips open for quick top ups at aid stations, and the wide mouth can accommodate drink mixes and ice cubes. The included drinking-tube cap can also be swapped out with a . You can also use just a bite valve without the drinking tube.

A perfect match for our  or for our . Grab two bottles for balanced hydration.