NIKE Pro Hyperwarm Lines Crew Fitted Shirt Machine Wash Fabric: Body: Dri-FIT 88% polyester/12% spandex. Mesh: Dri-FIT 90% polyester/10% spandex. Dri-FIT Max fabric wicks sweat away to help keep you dry, faster Thermal mesh at the back and underarm for breathability Ergonomic seams for enhanced comfort Flat seams move smoothly against your skin