NIKE Women's Reflective Long Running Tights, Blue 92% polyester/8% spandex Dri-FIT fabric helps keep you dry and comfortable by wicking sweat away to the fabric's surface, where it quickly evaporates. Reflective elements provide visibility in low light. The snug full-length fit of these running tights lends support and coverage while helping reduce distractions on your run. Zippered back pocket for secure small-item storage Elastic waistband with an internal drawcord for a personalized fit