4.3 oz.(US) 7.15 oz.(CA), 100% preshrunk combed ringspun cotton,Athletic Heather: 90/10�cotton/polyester,Charcoal Heather & Graphite Heather: 50/50 cotton/polyester,Set-in rib collar with shoulder-to-shoulder taping,Double-needle sleeve and bottom hem,CPSIA compliant,Tearaway label