Pellon-Insul Film Interfacing: Silver. A thin sheeting that provides insulation for hot and cold barrier projects. Lightweight and flexible making it perfect for a variety of projects that need temperature control without the bulk. Great for wine totes, ice pouches, window covering, jackets and gloves. Made of 100% Metalized Polypropylene. This package contains 20 yards of 20 inch wide insul-film interfacing. Made in USA.