FIA 8856 - 2000 HomologatedOur K1 RaceGear Fire Rated Long Sleeve Nomex Undershirt will give you additional protection in those critical times of fire danger. Designed to absorb perspiration to keep you cool during those long hours in the sun. Keeping both you and your suit dryer for continued comfort all day long. Constructed of lightweight nomex, you'll not only feel more comfortable, but you'll look good as well.