Carhartt Men's 101545 Force Extremes&Trade; Short Sleeve T-Shirt 60% polyester/40% Cocona 37.5 polyester 4.7-ounce, 60% polyester/40% Cocona&reg; 37.5&trade; polyester Relaxed Fit FastDry&reg; with 37.5&trade; technology dries fast to keep your body at its ideal temperature Rugged Flex&reg; technology for ease of movement Fights odors