Callaway Men's Short Sleeve Tonal Polo Shirt 92% Polyester/8% Spandex Imported Opti-Dri technology transfers moisture away from the body to keep you cool and dry Opti-Shield technology creates a layer of UPF 50 sun protection from the sun's harmful rays Opti-Stretch fabric features interwoven layers of spandex to ensure maximum range of motion so the garment moves either with your golf swing or at work Self fabric collar, 3-button placket with Callaway embossed buttons Tonal embroidered Callaway logo on right sleeve