This heavyweight Flame-Resistant Bib Overall from Carhartt is manufactured of 12-ounce Nomex IIIA fabric with a FR neoprene moisture barrier. High back with FR elastic suspenders and FR center-release buckles. Chap-style front for increased durability. Non-conductive leg zippers to knee. 3M Scotchlite Reflective material. Reflective trim also encircles each leg. Meets ASTM F1891, F2733, and F903 requirements. Meets the performance requirements of NFPA 70E standards. VPN: 100445.