Warm Company Insul-Brite Bolt 22" wide WAC6320 Needle punched insulated lining ideal for home sewers and crafters. Consists of hollow, polyester fibers needlepunched through a nonwoven substraight and through a reflective, metallized, poly material. The needled material is breathable and won’t break down with washing. The hollow fibers resist conduction while the reflective, metallized, poly material resists radiant energy. Heat and cold is reflected back to its source. Ideal for pot holders, table pads, oven mitts, baby warmers, water heater covers, iron cozy, casserole cozy, tea cozy, insulated soft lunch carriers, ironing board covers, outdoor stadium cushions. Machine wash & dry, no pre-wash necessary. At least one layer of cotton batting is recommended with Insul-Bright when used as Oven Mitts or Pot Holders. Insul~Bright is heat-RESISTANT, NOT heat-proof. NOT FOR USE IN THE MICROWAVE!