13-ounce FR duck 100% cotton - 11.5-ounce FR quilt lining; FR Modacrylic batting quilted to twill face cloth - 100% flame resistant modacrylic resin insulation - Two inside patch pockets with FR hook-and-loop closure for convenient storage - Nomex inside waist drawcord for adjustment - Nomex rib-knit storm cuff to seal out cold air - Two-way brass front zipper with Nomex zipper tape - Inside and outside protective flaps with hook-and-loop closure for electric arc protection - Under collar snaps for optional FR hood (Style# FRA265) - Carhartt FR and NFPA 2112/CAT 4 labels sewn on left-chest pocket - Back length: Large Regular: 31.5 inches; Large Tall: 33.5 inches - Meets the performance requirements of NFPA 70E standards and is UL Classified to NFPA 2112 - Replaces style: FRC066 - CAT - 4 - ATPV(CAL/CM2) - 54.3