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. 1/4-zip with Callaway logo rubber zipper pull. Contrast binding detail at chest and cuffs. Heat seal label provides tag-free comfort. Contrast embroidered Callaway logo on right sleeve.