Opti-Dri technology transfers moisture away from the body to keep you cool and dry;UV Block technology keeps skin safe from the suns harmful rays;UPF 50+;Rib knit collar;3-button placket with Callaway embossed buttons;Double needle hemmed bottom with side vents;Heat seal label provides tag-free comfort;Tone-On-Tone embroidered Callaway TOUR logo on right sleeve;Mens Sizes S-4XL