What is the DEI?? Hot, cold, resistant, absorbtion?? Many different tempts and usages that look great. I have used materials that range from 1,200 F to minus 150 for different purposes. Chillers,,, mid range 45 to 15 with hot spots of manifolds that can exceed 1,500 F. Many ways to perty em up to wear you don't know what is under the skirts.