NIKE Women's Epic Lux Printed Running Tights Wide elastic waistband with internal drawcord and slash pocket for a secure fit that flatters Zip back pocket for secure storage Flat seams feel smooth against your skin as you run Fabric: Body: Dri-FIT 77% nylon/23% spandex. Mesh: Dri-FIT 81% nylon/19% spandex. Reflective elements enhance visibility in low light