Fusible bonding yarn is a simple way for making invisible hems. Made by Prym and supplied in 40m rolls, it can be used to replace thread on sewing machines or overlock machines. After adjusting fabric, hems can be ironed into place for a neat and secure finish. Ideal for keeping in sewing and craft kits. Ideal for dressmakers, tailors, students, garment manufactures or anyone working with fabrics.