Callaway Men's Outlast Premium 1/4-Zip Midlayer Long Sleeve 60% Polyester, 30% Outlast Polyester, 10% Spandex Imported Opti-Dri: transfers moisture away from the body to aid in evaporation Opti-Stretch: interwoven layers of Spandex to ensure maximum range of motion so the garment moves with the golf swing Opti-Shield: creates a layer of protection from the sun's harmful rays - UPF 50 Opti-Temp: keeps you warm during cold weather, dissipates heat when it's hot outside Callaway Tour Raised Seal Logo on Left Sleeve