4.5 oz., 100% ring-spun USA cotton (unless otherwise noted); Heather Grey is 90% ring-spun cotton/10% polyester; Other Heathers are 50% ring-spun cotton/50% polyester; Double needle stitching on sleeves and bottom hem; Taped neck and shoulders to provide durability; Reactive-dyed for longer lasting color; Contrasting color 3/4 raglan sleeves; Pre-washed to minimize shrinkage; Overlock stitching on bottom hem; Tubular construction; Ribbed crew neck; NAFTA certified; Tear-away label