4.5 oz./yd/160 gsm (US), 7.5 oz./L yd (CA), 100% polyester jersey. Moisture-wicking properties. Anti-microbial finish. ChromaSoft technology combines the colorfastness of cationic dyes with soft cotton-feel performance. Active fit. Three-button placket with self-fabric collar and integrated collar stays. Side vents. Dyed-to-match buttons. Tear-away label.