100% Polyester. Button closure. Machine Wash. MOISTURE WICKING: This women's golf shirt features moisture wicking Opti-Dri technology that moves sweat away from your body, while allowing optimal breathability, so you can always finish your game fresh and comfortable. VENTILATED FOR YOUR COMFORT: The Callaway short sleeve golf shirt has ventilated fabric that circulates air to transfer heat away from your body to keep you cool. With this golf shirt, those hot days won't stop you from working on your game.