5.4 oz. 100% preshrunk heavyweight U.S. cotton, sewn in US from Import fabric; Heather Grey 90/10 cotton/poly; Safety (Green & Orange) 50/50 cotton/poly; Safety Green & Orange are ANSI/ISEA 107-2010 certified as background material; Seamless collar; Shoulder-to-shoulder tape; Double-needle neck, sleeve and bottom hem; Features an Anvil® tag-free pad print label; Oeko-Tex® Standard 100 Certified; TrackMyT® number in the neck label and can be traced on TrackMyT.com