SUPERIOR FLAME RESISTANCE - Flame resistance guaranteed for the life of the garment. Superior flash fire and arc flash protection. Thermal Protective Performance (TPP) Value 9. ATPV 10 cal/cm� (Arc Thermal Protective Value). Sewn with aramid inherently FR thread. MATERIAL - FR-TechT 88% premium cotton blended with 12% high-tenacity nylon, 7 oz (240 GSM).