6 oz., 50% USA cotton, 50% polyester; DryBlend? fabric wicks moisture away from the body; Made with 50% sustainably and fairly grown USA cotton; Welt-knit collar and cuffs; Heat transfer label; Three-button placket with woodtone buttons; Gildan's manufacturing process utilizes 45% renewable energy; Gildan?s Community Investment Program supports education, the environment, humanitarian aid and active living in the communities we do business in