4.2 oz./yd2, 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. Neon colors are 3.6 oz./yd2, 52/48 airlume combed and ringspun cotton/polyester, 40 singles. Unisex sizing. Retail fit. Side seams. Tear away label.