6 oz., 100% preshrunk cotton; Ash Grey is 99/1; Sport Grey is 90/10; Antique colors are 90/10; Heathers and Safety colors are 50/50; Tear away label; Double-needle sleeve and bottom hem; Seamless double-needle 7/8"" collar; Taped neck and shoulders; Safety Green is compliant with ANSI / ISEA 107 high visibility standards