Do you want pucker free embroidery? If so, Prep Plus is the solution. This is a FUSIBLE fabric preparation product. This creates a bond with the fabric without changing the face or drape of the fabric. When you embroider, you damage the fibers of the fabric with the penetration of the needle. This product enhances the stitch count of any fabric you are using. It is soft & sheer. Use on cottons, knits, silk, satin, lame, lyrca or spandex. It is truly amazing!