Several years ago, I bought padding that I was told was used in ironing board pads. I bought it by the yard at a quilt show. I used it to make pot holders. I worked great. No heat penetrated the pot holder. I would like to buy it again so I can put it under a tablecloth on my serving table and then I can put very hot casserole dishes, etc., on it. It sort of looks like a very thick felt, about 1/4 inch thick. I don't really care about the width because I can buy a couple of lengths and cut to fit. I appreciate any help/advice. Open to any suggestions. Thank you.