4.5 oz., pre-shrunk 100% ringspun cotton. 30 singles. Double-needle stitched neckline and sleeves. Quarter-turned. Taped neck and shoulder. Three-quarter inch seamless collar. Tearaway label. Heathers are 35/65 cotton/polyester. Sport Grey and Antiques are 90/10 cotton/polyester. Graphite Heather is 50/50 cotton/polyester.