The Nike Miler T-Shirt is made from recycled polyester, to keep you running in and caring for the environment. This Dri-FIT® top with self fabric binding set on the neckband, a shaped hem, and flatlock side seams to minimize the opportunity for chafing. Reflective taping at the sleeve adds visibility in low light. The cord management solution at the back neck will manage your music player cord, and is reflective as well. Nike running back neck tape holds neck shape. Swoosh design trademark in reflective material at left chest. UV-protective. 100% Dri-FIT® polyester. Imported.