8 oz., 50% USA cotton, 50% polyester Pill-resistant air jet yarn Made with 50% sustainably and fairly grown USA cottonPill-resistant air jet yarn Double-needle stitching throughout Set-in sleeves 1x1 ribbed collar, cuffs and waistband with spandex Safety Orange is compliant with ANSI - ISEA 107 High-visibility Standards 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