This 4750 medium weight iron on woven interlining is suitable for both lightweight & outerwear fabrics. Unlike non-woven interfacing, woven interfacing has a fabric-like structure, ensuring it moves naturally with your fabric. Place the Interfacing with the coated side on the wrong side of the fabric. Cover the entire area with a damp ironing cloth. It is recommend that you attach a small piece of interfacing to a fabric remnant with your iron first to make sure that the hold and the adhesion meet your expectations. To use press the iron on step-by -step for about 12 seconds, using a damp cloth. Do not push. Washable at 40%.