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.