NFPA® 2112. Arc Rating ATPV 45 cal/cm2. Fabric is flame-resistant, shell: 9 oz, water-repellent twill, 100% Cotton Excel FR®, insulation: 12 oz, 100% Modacrylic, lining: 100% Cotton. This FR jacket has Nomex® taped brass zipper closure, large inset, welted-slash pockets, sleeve pocket.