3.5 oz./yd (US), 5.8 oz./L yd (CA), 100% polyester interlock. Team fit. Moisture-management and UV protection performance. Cationic dyes for superior brightness and excellent colorfastness. Three-button placket. Dyed-to-match buttons. Cationic dyes for superior brightness and excellent colorfastness. Transitioning from heat-seal label to tear away label.