6 oz./yd/210 gsm (US), 10 oz./L yd (CA), 100% polyester pique. ChromaSoft technology combines the colorfastness of cationic dyes with soft cotton-feel performance. Moisture-wicking. Anti-microbial performance. Side vents. Three-button placket with self-fabric collar and integrated collar stays. Dyed-to-match buttons. Tear away label.