Fusible Interfacing is a non-woven polyester blend for sewing projects requiring stabilization of a fabric reinforcement of a fabric or a bit of extra body to a material. It is mostly used while sewing garments such as shirt cuffs collars and button holes dresses blouses waistbands and jackets but is also used in home dÃcor projects and handbag creation. Iron-On All Therm O Web Fusible Interfacings are machine washable dryable and dry cleanable. Iron-on Interfacings allow for construction of the garment without extra pinning! Adheres to the fabric in seconds! Use Heavy Weight for thicker fabrics such as: corduroy heavy cotton denim tweed velvet and heavy wool.20 inches x 1 yard.