Backed by a dry adhesive film that is activated by heat, HeatnBond interfacing forms a no-sew bond three times stronger than other traditional fusible web without adding weight or stiffness. Feather light weight is perfect for dresses and blouses made of sheer or lightweight fabrics. With a low temperature and short pressing time, it allows for a wider range of materials to be bonded. There is no steam or pressing cloth needed, and it will not lift or pucker after washing. Machine washable, dry cleanable. 100% Polyester.