100% cotton twill; 95% polyester / 5% elastane mesh back. Built with Force technology to wick sweat. FastDry technology sweatband keeps you cool for all day comfort. Flexfit technology for a comfortable fit. Structured, fitted cap with a pre-curved visor. Stretch in sweatband and crown provides a comfortable fit. Adjustable snapback closure accommodates 10 different head sizes. Rubberized Carhartt patch on front. Carhartt embroidered on back.