13-ounce, 100% cotton FR duck. 10.5-ounce FR quilt lining: FR modacrylic batting quilted to twill face cloth. Two inside patch pockets with FR hook-and-loop closures. Nomex rib-knit cuffs and waistband. Brass front zipper with Nomex zipper tape plus inside and outside protective flaps with covered snaps for electric-arc protection. Under-collar snaps for optional FR hood (FRA265). NFPA 70E compliant. Flame-resistant fabric by Mount Vernon Mills.