ARCSTOPPER? Arc Flash Protection Trouser are specifically designed to help the wearer insulate from high-intensity, short-term explosions and arc burning, thereby preventing clothing from breaking and burning or continuing to burn.
Arc Rated Fabric thermal performance value≥ 8.0cal/m2.
ASTM F 1959/ F 1959M
Performance level pass NFPA 2112:2012
https://www.lifesafepro.com/protective-clothing/arc-protection-clothing/arc-flash-protection-pant.html