100% polyester with built in Opti-Dri technology. Opti-Dri transfers moisture away from the body to aid in evaporation. Opti-Shield creates a layer of protection from the sun’s harmful UV rays – UPF 50. Opti-Stretch is interwoven layers of spandex to ensure maximum range of motion so the garment moves with the golf swing. Three-button placket with ribbed collar. Machine washable. L255 union logo and FIREFIGHTERS patch stitched onto left arm.