Pellon 975 Insul-Fleece is made from polyester fibers which are needle punched with an aluminized scrim binder that helps to reflect heat or cold back to its source. It is soft and comfortable for use in clothing as well as home dcor and accessories projects. Insul-Fleececan be sewn through and, once sewn, is machine washable and dryable. Keeps hot things hot longer and cold things cold longer. Insul-Fleece is not heat proof or fire resistant. We suggest you use an extra layer or two of 1