* 4.5 oz., 100% preshrunk ringspun cottonSport Grey and Antique Heathers: 90% cotton, 10% polyester * Graphite Heather: 50% ringspun cotton. 50% polyester * Heathers: 35% cotton, 65% polyester * Sport Grey and Antique Heathers: 90% cotton, 10% polyester * The color "Natural" is made with unprocessed, unbleached cotton, which results in small black flecks and plant fibers throughout the fabric