Baseball Sister Tee4. 5 oz., 100% preshrunk ring spun cotton Antique colors & Sport Grey: 90% ring spun cotton, 10% polyester Graphite Heather is 50% ring spun cotton, 50% polyester Heather colors & Blackberry: 65% polyester, 35% ring spun cotton The color "Natural" is made with unprocessed, unbleached cotton, which results in small black flecks and plant fibers throughout the fabric. Double needle stitched sleeves and bottom hem High stitch density for smoother