TheNike Challenger 2-in-1 Running Short delivers lightweight coverage and sweat-wicking support that lasts. Side panel mesh adds cool ventilation so you'll be comfortable while your endurance takes you farther. Features Dri-FIT technology helps keep you dry and comfortable. Upper back and side panel mesh enhances ventilation. Internal pocket secures small items. Elastic waistband has an internal drawcord to provide a personalized fit.