YOUTH 4.5 oz., 100% ring spun cotton Sport Grey is 90/10 cotton/polyester Heather colors are 65/35 polyester/cotton Graphite Heather is 50/50 cotton/polyester Taped neck and shoulders for comfort and durability Tubular body (side seam on size small), Modern classic fit Rib collar ADULT 4.5 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 printing surface Taped neck and shoulders Modern Classic Fit 5/8" rib collar