HydraPak Ultraflask+ Flask Filter System Men's Shoes Deep sensory activation of joints

Deep sensory activation of joints and muscles improves stability for more powerful workouts

Ethically-sourced merino wool feels super-soft against the skin

These clear frames with black non-reflective lenses make everything cuter

The ultra-cushioned game-changer

FF BLAST™ PLUS cushioning and PureGEL™ technology are strategically positioned in the midsole

HydraPak Ultraflask+ Flask Filter System Men's Shoes Deep sensory activation of jointsLighten your load and drink right from the source. We took our go to flask and added filtration to create a system that delivers hydration without contamination. The filter light and compact screws on top so you can drink right from the flask. Or if youre carrying more water use the system to fill a bottle or reservoir.