. Made of 100% polyester mesh fabric with a zipper front closure, this Type R vest is treated with flame-retardant properties and tested under D6413 test methods to self-extinguish when caught on fire. Employing cleaning methods other than those outlined above may shrink the vest, ruin the reflective tape or dim the coloring below safe standards. Flame-Retardant Safety Vest Class 3 w/ Zipper & 2 Radio Clips (Orange/4X-Large) The 2 in silver reflective tape and 4 in contrasting fabric wraps around the torso and arms, over the shoulders and across the back in an H-pattern for high visibility that meets ANSI/ISEA 107 Class 3.