When a job or task requires additional protection, National Safety Apparel offers several options to meet your needs. You will find a wide variety of protection levels, fabrics, and colors of arc flash suits designed for electrical work. If you have a specific need, we customize! C88UJ_ _ _ _ Coverall Series: 7 oz. Navy UltraSoft Coverall (Zipper Closure) (Arc Rating = 8 cal/cm²). C88UP_ _ _ _ Coverall Series: 9 oz. Navy UltraSoft Coverall (Zipper Closure) (Arc Rating = 12 cal/cm²).