THE WARM COMPANY-Insul-Bright: 36x45in. The Warm Company is pleased to present Insul-Bright, a needle-punched, insulating material ideal for home sewers and crafters. With today's focus shifting back to family and home, new and experienced sewers are choosing simple, practical projects for use in their homes or as gifts. Pot holders, oven mitts, lunch bags, water heater cover, ironing board cover and casserole covers are all projects made functional and safe with Insul-Bright. Insul-Bright consists of hollow, polyester fibers needle-punched through a nonwoven substrate and through a reflective metalized poly film. The needled material is breathable and won't break down with washing. The hollow fibers resist conduction while the reflective metalized poly film resists radiant energy. The energy, hot or cold, is reflected back to its source. NOTE: This fill is heat resistant not heat proof. Machine wash and tumble dry. Made in USA.