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.