Callaway Men's Golf Performance Birdseye Short Sleeve Polo Shirt 100% Polyester Imported Opti-Dri, Transfers moisture away from the body to help in evaporation Opti-Stretch, fabrics feature interwoven layers of Spandex and Lycra to ensure maximum rage of motion so the garment moves with the golf swing Birdseye Detailed Polo Shirt Machine Wash Cold, Tumble Dry