6 oz.(US) 10 oz.(CA), 100% preshrunk cotton Ash Grey: 99/1 cotton/polyester Safety colors: 50/50 cotton/polyester Sport Grey: 90/10 cotton/polyester Safety Green: Compliant with ANSI / ISEA 107 Classic fit 3/4" double-needle topstitched collar Taped neck and shoulders Double-needle sleeve and bottom hems CPSIA Tracking Label Compliant PFD White: 100% cotton with cotton thread