4.2 oz., 100% airlume combed and ringspun cotton, 32 singles Ash is 99/1 airlume combed and ringspun cotton/polyester Athletic Heather is 90/10 airlume combed and ringspun cotton/polyester Alternate Heathers are 52/48 airlume combed and ringspun cotton/polyester Neons are 3.6 oz., 52/48 airlume combed and ringspun cotton/polyester, 40 singles Marbles are 3.5 oz, 91/9 polyester/ airlume combed and ringspun cotton, 40 singles Side seams, slim fit Tearaway label