FR MATERIALS: 7 oz Rip-stop FR Treated. FR Reflective Tape. FR aramid zipper, brass. Aramid threads.Double-stitched 2" silver reflective tape-ANSI/ISEA 107-20 Class 1 Type O CLASS 1. Ultra-reflective area; double-ring tapes on bottoms. FR Tag on the right cargo pocket, and more FR info on the inside Tag about UL Certification. ENSURE SAFETY AT WORK: This fire-retardant hi-vis work pant meets or exceeds the standards for HRC2, Arc Rating ATPV 8 cal/cm², and the requirements of NFPA 2112 standard on flame-resistant garments for protection of industrial personnel against flash fire, 2012 edition. Also NFPA 70E, ASTM F1506, and CAT 2-classified! UTILITY-FOCUSED DESIGN: Strong gusseted crotch, reinforced boot openings, and an elastic waistband. These FRC pants feature multiple cargo pockets, including 2 slant pockets, 2 divided cargo pockets with Velcro, reinforced slant knife pockets, a utility tools slot, and two back pockets with buttons. COMFORTABLE FLEXIBLE FIT: Designed with a relaxed fit and rip-stop stretch fabric for better range of motion and comfort during long work days. Prewashed and preshrunk to reduce shrinkage after washing. Wrinkle-resistant and machine washable. Flexible knees and an elastic waistband offer extra comfort and flexibility when bending, climbing, or kneeling. 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 work.