Opti-Dri technology transfers moisture away from the body to keep you cool and dry. Opti-Shield technology creates a layer of UPF 50 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. Rib knit collar 3-button placket, Callaway embossed buttons, Double needle hemmed bottom, side vents. Call for rush options for embroidery. Complies with Prop 65.