13-ounce, 100% cotton FR duck 11.5-ounce FR quilted twill lining; FR modacrylic batting insulation for warmth Meets the performance requirements of NFPA 70E UL® classified to NFPA 2112 Carhartt FR and NFPA 2112/CAT 4 labels sewn on front pocket High back with FR suspenders and FR center-release buckles Multi-compartment bib pocket Two large lower-front pockets Two reinforced back pockets Double-layer knees with openings for adding knee pads and cleaning out debris Ankle-to-thigh brass leg zips with Nomex® FR zipper tape and protective flaps with arc-resistant snap closures
