83% POLYESTER, 10% SPANDEX, 7% LYOCELL. STRETCHY, SWEAT-WICKING FEEL THAT HELPS YOU GET THE MOST OUT OF YOUR SWING. BREATHABLE FABRIC AROUND THE NECK BRINGS COOL COMFORT ON THE COURSE AND BEYOND. JUST THE RIGHT LENGTH, SO YOU CAN WEAR IT TUCKED OR UNTUCKED, ANY TIME OF YEAR. NIKE SWOOSH ON LEFT SLEEVE.