The Nike Dri-FIT Racer Running Long-Sleeve T-Shirt features a back mesh panel that provides added comfort and breathability. The Dri-FITŪ fabric wicks away moisture, which allows you to run in comfort. This long-sleeve running shirt also features a reflective loop on the back neck providing you with cord management and a hassle-free run. 100% Dri-FITŪ polyester. Imported.