Comply with the national standard: GB8965.1-2020 flame retardant clothing standard Fabric composition: cotton Yarn density: 10*780*46 Weight: 390g/m 1. This product is made of specially treated cotton flame retardant fabric, and the garment meets the national flame retardant clothing standard 2. Copper snap buttons are used to prevent the buttons from melting 3. Split design, easy to wear 4. The shoulders and inner gear are reinforced by double lines to prevent tears