6.5-ounce, 84/10/6 poly/rayon/spandex with stay-cool wicking technology, UPF rating of 30, OGIO heat transfer label for tag-free comfort, embossed OGIO neck taping, self-fabric collar, 1-button placket with merrow stitch bar tack, sandwich tone buttons, raglan sleeves, merrow stitching detail at shoulders, embroidered dyed-to-match O logo icon on left sleeve, side vents.