3.7 oz./yd2, 30/1's fabric; 50% cotton / 25% polyester / 25% rayon; Tri-Blend colors are 50% polyester, 25% cotton and 25% rayon; Tri-Oatmeal is 50% polyester / 37% cotton; 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