Pellon Wonder-Under is a soft, paper-backed fusible web that can be used to bond fabrics to other fabrics or porous surfaces; such as wood and cardboard. Pellon Wonder Under fuses quickly and can be stitched by hand or machine without gumming up your needle. Pellon Wonder-Under is a permanent web that can be machine washed and dried. Pellon Wonder-Under is made from 100% acid-free polyester. Pellon Wonder-Under Fusible Web measures 17 inches and is sold by the yard.