4.2 oz., 100% airlume   combed and ringspun cotton, 32 singles Ash is 99/1  airlume combed and ringspun cotton/polyester Athletic Heather and Black Heather are 90/10 airlume  combed and ringspun cotton/polyester Alternate Heather colors are 52/48  airlume combed and ringspun cotton/polyester Marbles are 4.0 oz., 91/9 polyester/ airlume  combed and ringspun cotton, 32 singles Neons are 3.6 oz., 52/48  airlume combed and ringspun cotton/polyester, 40 singles Slubs are 4.0 oz., 50/37.5/12.5 polyester/ airlume  combed and ringspun cotton/rayon, 32 singles Black Slub is 4.0 oz., 40/30/30 polyester/ airlume  combed and ringspun cotton/rayon, 32 singles Black Mineral Wash is 4.4 oz., 100% airlume  combed and ringspun cotton, 32 singles Side seams, retail fit Unisex sizing Coverstitched v-neck and hemmed sleeves Shoulder-to-shoulder taping Due to the unique Mineral Wash process, color will vary from garment to garment Tearaway label