The Nike SB Skyline Dri-FIT Cool Three-Quarter Crew wicks away sweat to help you stay dry, with stretch added to the fabric to enhance mobility. It's droppped hem extends coverage in back, while articulated sleeves create an ergonomic fit. Underarm and back-body mesh panels optimize ventilation. 75% Polyester 13% Cotton 12% Rayon. Built in stretch for enhanced mobility.