FR MATRIALS:7.5oz Cotton Twill FR Treated,FR Reflective Tape,FR zipper.Double-stitched 2" sliver reflective tape over 4" FR contrast stripe-ANSI/ISEA 107-20 Class 1 Type O CLASS 1. Ultra reflective area on back and double ring tapes on pants. FR Tag on pen pocket and More FR info on inside Tag About UL Certification. ENSURE SAFETY AT WORK :This fire retardant hi vis coverall meets or exceeds the standards for HRC2,Arc Rating Atpv 9.6 Calories/cm2 and the requirements of NFPA2112 Standard on Flame Resisant Garments for Protection of industrial Personnel Against Flash Fire,2012 Edition.Also NFPA70E ASTM F1506 AND CATII Classified! UTILITY CONSTRUCTION:2 chest pockets(1 with flap and plus an unique pen holder),2 loops unpon chest pockets,2 back and 2 side pockets, 1 tool pocket on right leg,2 pass-through pockets.2 bottoms zipper with hook&loop clousure,on flag patch on sleeve(convenient for your company logo replacement). FIT:Relax fit with and elasitic waistband offer more comforable room when you bend or climb.Refer to our size chart. MULTI-USE:Made For Welders, Fitters, Ironworkers, Electricians, and Other Industrial Workers in Oil and Gas field. It Can Be Used For Any Kind Of Industrial and Construction works.