The K1 Nomex Auto Racing Suit is made of double layer DUPONT NOMEX III and is SFI 3.2A/5 Rated. Quilted from the outside with ribbed collar, wrist cuffs, ankle cuffs, belt and epaulette. Ribbed elastic under the arms to facilitate 360 degree movement and custom back stretched panel for added comfort. This suit brings the safety of Nomex fabric and the comfort of K1 Race Gear into a nice little package. It's not your regular suit!