Ultrahold has 3 times more adhesive than traditional fusible webs and provides the strongest bond available of any iron-on adhesive. A paper backed sheet of solid heat activated adhesive, unlike other webs on the market. It has a low temperature/ short pressing time so it allows for a wider range of materials that can be bonded. There is no steam or pressing cloth needed and no lifting or pucker after washing. Double sided adhesive. 17" wide.