4.3 oz.(US) 7.2 oz.(CA), 100% preshrunk combed ringspun cotton, 30 singles,Heather Grey is 90/10 cotton/polyester,Heather Graphite is 50/50 cotton/polyester,Alternate Heather colors and Neon colors are 65/35 polyester/cotton,Semi-fitted,High stitch density for smoother printing surface,Shoulder-to-shoulder taping,Seamed collar,Double-needle stitched sleeves and bottom hem,Side seams,Oeko-Tex� Standard 100 Certified,TearAway� label