The basics Steam-A-Seam 2 is a heat-activated double stick fusible tape. The benefits Steam-A-Seam 2 Double Stick has pressure sensitive adhesive on both sides which allows for a temporary hold to both materials.  The uses Fusible tape is perfect for seams and hems, trims, crafts, and zippers.  The pro tip You can hold your project vertically and the appliqué pieces stay in place and are still repositionable until fused with an iron. Once fused, the bond is permanent and machine washable and dryable.