Canvas - Polyester/Cotton T-Shirt - 3650 100% Cotton 3.6 oz., 52/48 airlume combed and ringspun cotton/polyester, 40 singles. 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. Speckleds are 4.0 oz., 50/25/25 polyester/airlume combed and ringspun cotton/rayon, 32 singles.