6 oz.(US) 10 oz.(CA), 100% preshrunk cotton Safety colors: 50/50 cotton/polyester Sport Grey: 90/10 cotton/polyester Classic fit with longer body 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 Tearaway label