Jacket Features: 13-ounce, FR duck, 100% cotton 10.5-ounce, quilt lining:FR modacrylic batting quilted to twill face cloth Two inside patch pockets with FR hook-and-loop closures for convenient storage Nomex rib knit cuffs and waistband Brass front zipper with Nomex zipper tape has inside and outside protective flaps and hidden snap closure for electric arc protection Corduroy top collar with snaps under collar for optional FR hood Flame resistant fabric by Mount Vernon Mills NFPA 70E compliant For larger sizes, see style FRJ195BRN-TLL Carhartt FR clothing is specially designed for electricians and workers in the utility, oil, gas and petrochemical fields who are at risk of electric arcs and flash fires that could cause severe or fatal burn injuries. Typical candidates for FR clothing include electric linemen, pipeline and refinery workers, as well as industrial electricians.