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