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, self-fabric collar, 4-button covered placket, sandwich tone buttons, forward shoulders, merrow stitching detail at shoulders, embroidered dyed-to-match O logo icon on left sleeve, curved hem with slight back drop.