Constructed of durable FR treated cotton and tested to retain protection through 100 washes. They meet or exceed industry standards for FR and Arc Flash (NFPA 2112 and NFPA 70E -- ARC 2 ATPV 10cal/cm2)
Features: 
Durable 9 oz. flame-resistant treated cotton with 2 reflective tape  Adjustable elastic waistband for a better fit  Chest pockets with protective flaps and pencil slots  Gusseted underarms provide greater freedom of movement  Large hip pockets with coin catch  2-way FR zipper with protective flap  Meets OSHA 1910.269 and 1910.132  Sizes: S-5XL