Created from needle-punched polyester fibers, Insul-Bright Insulated Lining 36" x 45" is an insulated polyester batting, with a reflective Mylar weave, which helps reflect hot and cold.

Insul-Bright is a just like any other batting except you use it when you're making pot holders, lunch bags, totes, or grocery bags. Keeps Hot things hot and cold things cold.