This batting is an iron on batting made the same way the Hobbs Heirloom Premium 80/20 batting, except it uses a fusible resin in the spray bonding process, on both sides. This resin eliminates the need for pinning or basting, saving quilters time. Simply press your quilt from the center to the outer edges. Make sure you keep your iron moving, pressing approximately 3-4 seconds in each area. Once you have covered the entire surface area of your quilt, allow the quilt to cool. You may then begin quilting by hand or machine. Quilt up to 4" apart. 3-5% shrinkage.