4.2 oz./yd, 100% ringspun cotton, 30 singles. Graphite Heather is 50/50 cotton/polyester. Heather colors are 65/35 polyester/cotton. Sport Grey is 90/10 cotton/polyester. Modern classic fit. Non-topstitched, classic width, rib collar. Taped neck and shoulders. Double-needle sleeve and bottom hem. Side seams only for size SMALL . Tear away label.