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. 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. NOTE: This fill is heat resistant not heat proof. Machine wash and tumble dry. Made in USA.