Pellon 72F Peltex II Two-Sided Fusible is an ultra-firm, double-sided fusible stabilizer. It provides smooth, heavyweight stabilization for accessories, crafts, home decorating, and quilting. It is sewing machine safe and will not flatten out or become distorted with steam pressing. Peltex II has no grain and can be cut in any direction. 100% Polyester. Sewing machine safe.