Callaway Men's Golf Short Sleeve Fine Line Stripe Polo Shirt 92% Polyester/8% Spandex Imported OptiDri: transfers moisture away from the body to aid in evaporation OptiShield: create a layer of protection from the sun's harmful ways OptiGenic: anti-microbial treatment keeps the garment fresh over time, reduces order and helps maintain durability OptiStretch: interwoven layers of Spandex to ensure maximum range of motion so the garment moves with the golf swing Contrast embroidered Callaway logo on right sleeve