Callaway Women's Golf Performance Sleeveless Stripe Printed Polo Shirt 95% Polyester/5% Spandex Imported Opti-Dri: transfers moisture away from the body to aid in evaporation OptiVent: allows for the garment to have maximum breath-ability OptiStretch: fabric features interwoven layers of spandex to ensure maximum range of motion so the garment moves with the golf swing Machine Wash Cold, Tumble Dry