4.2 oz., 100%  airlume combed and ringspun cotton, 32 singles Athletic Heather is 90/10 airlume combed and ringspun cotton/polyester Dark Grey Heather is 52/48  airlume  combed and ringspun cotton/polyester Triblends are 3.8 oz., 50/25/25 polyester/ airlume  combed and ringspun cotton/rayon, 40 singles Retail fit Unisex sizing Ribbed cuffs Side seams Tearaway label