6 oz.(US) 10 oz.(CA),100% preshrunk cotton,Safety Green: 50/50�cotton/polyester,Ash: 99/1 cotton/polyester,Athletic Heather: 90/10�cotton/polyester,Set-in rib collar with shoulder-to-shoulder taping,Seamless double needle 7/8" collar,Double-needle sleeve and bottom hem,Tearaway label