Separating, heavy-duty, Nomex taped brass zipper Two large external patch pockets with concealed snap secured flaps with hand warmers Deep-pleated action back Fully-tunneled elasticized waistband This garment meets or exceeds the standards for CAT3, Arc Rating ATPV 34 calories/cm², NFPA 2112 Compliant Certified by Underwriters Laboratories to meet the requirements of NFPA 2112 Standard on Flame Resistant Garments for Protection of Industrial Personnel Against Flash Fire, 2018 Edition. Separating, heavy-duty, Nomex taped brass zipper