Insul-Film Batting 20inch wide - Insul-Film is a thin sheeting that provides insulation for hot and cold barrier project. It is lightweight and flexible making it perfect for a variety of projects that need temperature control without the bulk of an insulative fleece. Great for wine totes, ice pouches, window covering, marathon blankets, jackets, and gloves. Lightweight temperature control. Sewing machine safe. 100% Metalized Polypropylene.