Steam-A-Seam 2 is a sticky fusible web with paper on both sides. The stickiness allows for a temporary hold of your appliqu_ piece to the background material. You can even hold your project up vertically and the appliqu_ pieces will stay in place. They are repositionable over and over again until fused permanently with an hot steam iron. You must have your iron on the Cotton setting with Steam to use Steam-A-Seam II fusible web. You should pre-wash your fabric for a permanent bond.