FR AND ANSI: Made with 7.5 oz cotton twill, flame-resistant treated, FR zipper, aramid threads. 4" yellow high-vis FR tape with 2" FR silver stripe-ANSI/ISEA 107-2020 Type O CLASS 1. Back X-stitch reflection.Clear FR tag and UL Certified label on pocket, NFPA 2112, NFPA 70E ENSURE SAFETY AT WORK: This high-visibility work vest meets or exceeds the standards for HRC2, Arc Rating ATPV 10.1 cal/cm², and meets the requirements of NFPA 2112 Standard on flame-resistant garments for protection of industrial personnel against flash fire, 2012 edition. VEST STRUCTURES 10 POCKETS: Constructed with zipper front closure, two chest pockets with Velcro closure, two phone loops, one big cargo pocket left bottom and 2 divided pockets right, for water and tools design, back opening with 2 zipper closures,4 inner divided pockets MORE VISIBLE: 4 inches of yellow tape with 2 inches Reflective silver stripe covers the front and back; yellow stripes around the neck and shoulders greatly improve the visibility of the product, no matter day or night MULTI-USE: Made for welders, fitters, ironworkers, electricians, and other industrial workers. Whether you're engaged in industrial or construction work, our flame-resistant vests provide daily protection and enhance your performance during heavy-duty tasks.