5.3 oz.(US) 8.8 oz.(CA), 100% preshrunk cotton Heather colors, Graphite Heather, Safety colors, Tweed, Blackberry, Lilac, Midnight, Neon colors & Sunset: 50/50 cotton/polyester Antique colors & Sport Grey : 90/10 cotton/polyester Ash Grey: 99/1 cotton/polyester Classic fit Seamless double needle 7/8" collar Taped neck and shoulders Double needle sleeve and bottom hems Quarter-turned to eliminate center crease Safety Green: Compliant with ANSI / ISEA 107 Tear away label