FR MATERIALS: 6 oz Cotton Rip-Stop Water Repellent and Stain Resistant finish. FR Treated, FR zipper. FR Tag on sleeve, UL tag on front pocket and more FR info from inside Tag about UL Certification. ENSURE SAFETY AT WORK : This fire retardant coverall meets or exceeds the standards for CAT2 HRC2, Arc Rating Atpv 8.0 Calories/cm2 and meets the requirements of NFPA2112 Standard on Flame Resistant Garments for protection of industrial Personnel against Flash Fire,2012 Edition. NFPA70E ASTM F1506 and NFPA2112 CAT2 Classified by UL UTILITY CONSTRUCTION: Zipper front and metal snaps closure, elastic waistband.2 chest pockets(1 with flap and a unique pen holder),2 back and 2 slant pockets, carpenter tool pocket on right. FIT: Relax fit with an elastic waistband offers more comfortable room when you bend or climb. MULTI-USE: Made for Welders, Fitters, ironworkers, Electricians, and other Industrial Workers in the Oil and Gas field. It can be used for any Kind of Industrial and Construction works.