4.3 oz.(US) 7.6 oz.(CA), 100% preshrunk ringspun cotton, 30 singles,Heather Grey is 90/10 ringspun cotton/polyester,Heather Dark Grey is 35/65 cotton/polyester,Semi-fitted,Bound rib trim neck and armhole,Double-needle bottom hem,Side seams,Oeko-Tex� Standard 100 Certified,TearAway� label�