4 oz., 50% polyester, 25% cotton, 25% rayon; Tri-Oatmeal and Tri-Lieutenant are 50% polyester, 37% cotton, 13% rayon; 30/1 singles;Shoulder-to-shoulder tape and 7/8" seamed collar; 1” blind-stitch sleeve hem; 1” double-needle bottom hem; Double-satin razor label; Sideseamed; American Apparel's manufacturing process utilizes 45% renewable energy; American Apparel®, through Gildan’s Community Investment Program, supports education, the environment, humanitarian aid and active living in the communities we do business in;