Stiffen is an extremely stiff material that bonds to other fabrics creating a rigid material similar to cardboard. It is made of polyester. Stiffen is perfect for making totes, bags, purses, tabletop décor, boxes, costumes, hats, and any other project that needs a stiff backing.Details:White20" x 10yd.(50.8cm x 9.14m) roll sizePolyesterOne sidedMade in the USA