HEATNBOND Craft Extra Firm Non-Woven Fusible Interfacing is a stiff fusible support used to build structure into craft and home décor projects. This white 50.8 cm × 0.9 m (20 in × 1 yd) piece is a polyester/rayon blend that helps wallet panels, handbags, organizers, and décor items keep their shape. Fuse it to the wrong side of fabric with a dry iron, let it cool flat, and then sew your seams as usual for a firm, clean finish.