10.5 oz/sqyd, 18/1, 75% us cotton, 25% recycled polyester; The Hammer Maxweight 2-end heavyweight fleece is a combination of style and functionality; Made with recycled polyester and 100% cotton face, ideal for decorating; 1x1 rib cuffs and waistband for enhanced stretch and recovery; Classic fit, seamless body; High-performing recycled tear-away label; 53% of our energy comes from direct sources of which the majority is Biomass. More information about Biomass Energy can be found at education.nationalgeographic.org/resource/biomass-energy/; Gildan?s Community Investment Program supports education, the environment, humanitarian aid and active living in the communities we do business in. Learn more at: Gildan- Making Apparel Better (gildancorp.com)