The Helly Hansen men's Duluth Flame-Resistant Thermal Work Jacket, will keep you warm and provide extra coverage with its flame-resistant layer. Built to be anti-static and self extinguishing. This HH thermal layer is rated HRC 2 according to NFPA 70E and meets ASTM F2302 standards for flame- and heat-resistance and ASTM F1506 standards for electrical arc protection.