"PRESS ON & PUNCH" FOR SWEATSHIRTS & TSHIRTS...To stitch directly on any "stretchy" surface such as a t-shirt or sweatshirt, you must use FUSIBLE WOVEN INTERFACING.. In punching, your pattern is on the back of the garment but first iron on the interfacing on the inside of the garment and iron on pattern on the interfacing. Place both in our great hoop with legs with the gripper lip and get it "drum, drum tight" and stitch through both with your punch. The interfacing prevents stretching and creates a tight fabric to punch on. When finished, trim away excessive interfacing. Whatever you stitch is machine washable & dryable. Complete instructions are included,  We offer a 18" X 22" piece of interfacing. More than enough for plenty of garments.