Feather Weight Fusible Interfacing by Pellon is suggested for use in midweight fabrics such as challis, chambray, jersey, broadcloth or linen. To fuse this interfacing, pin your pattern piece on and cut so they are the same size. When the interfacing is cut out, place the fusible part of the interfacing on the wrong side of the fabric and iron. Once the fabric has cooled, be sure to check that the fabric and interfacing have bonded. Always pre-wash your fabric but interfacing does not need to be pre-washed.