Fire resistant man's thermal underwear 1.100% FR ... function of anti static 3.Keep warm and soft Fire resistant man's thermal underwear Product introduction1,Use 100% ... be customizable with the function of thermal , anti static and fire retardant .3, Color : grey, navy blue ,white ,black ... , M, L, XL, 2XL,3XL etc.5, Application :widely used in autumn and winter . Fire resistant man's thermal underwear