Ultra-light, stretch-woven outer fabric for totally unrestricted movement. Built-in Iso-Chill compression shorts disperse body heat, making it feel cool to the touch. 4-way stretch material moves better in every direction. Material wicks sweat & dries really fast. Updated, expandable center-back pocket is water-resistant & keeps your phone secure, with no bouncing. Soft knit waistband with internal drawcord & stash pocket with key ring. Shaped hem with side ventilation