Carhartt FRJ237 Flame Resistant Midweight Active Jacket with Carhartt's Midweight Quilt Lining. 8.5 ounce FR canvas: a blend of 88% cotton and 12% high tenacity nylon. 6.50 ounce FR quilt lining, FR modacrylic batting quilted to twill face cloth. Two lower front pockets. Two inside patch pockets with FR hook and loop closures. Nomex rib knit cuffs and waistband. Brass front zipper with Nomex tape plus inside and outside protective flaps with hook and loop closure for electric arc protection. Attached quilt lined hood with adjustable Nomex draw cord. Carhartt FR label sewn on front pocket, HRC 3 label sewn on zipper flap. NFPA 70E compliant. Flame resistant fabric by Mount Vernon Mills. HRC 3 ATPV (cal/cm2) 33.5