Pyramex - ANSI/ISEA 107-2020 TYPE R CLASS 3 FR | ASTM F1506/NFPA 70ECAT 1 |  ARC RATING (ATPV):4.0 cal/cm²  | Modacryclic Mesh Vest -   Modacrylic flame resistant lime mesh material  //  2” FR silver reflective material  //  FR black trim // D-ring slot  //  2 modacrylic FR mic tabs  //  Zipper front closure. Size  4X Large