Black Stallion CF4017-GY 7 oz. 88/12 Flame-Resistant Coveralls in Gray offers the comfort of cotton and the durability of nylon. 88/12 is a chemically-treated blend of 88% cotton and 12% nylon. The addition of nylon woven tightly on the inside of the FR cotton fabric makes the garment much more durable and comfortable. The CF4017 series is made with durable 7 oz. 88/12 FR blend and an elastic waistband and action back for a better fit. 2-way FR zipper with protective flap make it easy to wear. It features a large number of pockets; a Left chest pocket with pencil slot, Hip pockets and pass-through pockets. This coverall meets a number of regulations; NFPA 2112 UL Certified, NFPA 70E; ATPV 9.3 cal/cm2 (PPE Cat 2), and meets OSHA 1910.269 and 1910.132.