F E M M E S Black Noir 6040/BK Stone Pierre 6040/ST 50% Eco-Carbon fiber (derived from coconut shell) /50% Polyester 7.1 Eco-Drytech. A technical performance fabric that uses activated carbon to absorb moisture, U.V. rays, and odor. The Eco- Carbon appears as a grey color on the inside face of the fabric, you know it is there. Because Eco-Carbon is a fiber woven into the fabric, it will not wash away or wear out. Odor molecules are released and the carbon renewed when you wash and dry your garments. One inch crew neck. Setin sleeve. Double needle coverstitched.