THERM 0 WEB-Heat n Bond Iron-On Fusible Interfacing. This thick craft-weight non-woven interfacing is perfect for handbag and wallet construction, fabric bowls, and other home decor projects! This package contains one 25 yard bolt of 20 inch wide white non-woven, extra firm, iron-on fusible interfacing. Made of 100% polyester. Machine washable. Made in USA.