Pot holders, oven mitts, and casserole covers are made functional and safe with InsulBright Consists of hollow, polyester fibers needlepunched through a nonwoven substrate and through a reflective metalized poly film. The hollow fibers resist conduction while the reflective metalized poly film resists radiant energy resulting in the energy, hot or cold, being reflected back to its source. No Prewash Necessary. Machine Wash and Dry. At least one layer of cotton batting is recommended with InsulBright when used in oven mitts or pot holders. InsulBright is heatresistant, NOT heatproof. 22" x 20yd roll. Freight Intensive Billable transportation charges for freight intensive items will be the greater of the dimensional weight compared to the actual weight. In addition to transportation charges, freight carriers may assess an additional oversize charge per package.