Classic indura flame resistant coverall, navy, 4xl features: 9 oz. Indura frc flame resistant 100% cotton fabrics are engineered to provide optimum performance for industrial protective clothing. Flame resistant for the life of the garment. atpv 7.9 cal/cm2 non-sparking brass zipper non-sparking covered snaps one-piece action back with elastic waistband meets or exceeds nfpa 70e 1971 1975, 1977, astm f1506 arc thermal performance tested hrc level 1 pockets: 2 chest, 1 tool pocket, 2 back, 2 hip, 2 front pass through with snaps