13-ounce, heavyweight, 100% cotton flame-resistant duck 10.5-ounce FR quilt lining: FR modacrylic batting quilted to twill face cloth Two inside patch pockets with velcro closures Nomex® rib-knit cuffs and waistband Brass front zipper with YKK zipper Inside and outside protective flaps with hook-and-loop closure for electric-arc protection Carhartt FR label sewn on front pocket; Back length of Large 29” NFPA 70E compliant HRC - 4 ATPV(CAL/CM) - 54.3 Replaced by style# 101623 Imported Snaps under collar for optional FR hood