This is an "Akumachan-style" embroidered iron-on patch. Size: Please refer to the photo above the grid. 1 square = 1 cm. *Iron-on adhesion is not possible for waterproof or water-repellent materials. 1. Temporary Adhesion: Place the patch on the front side of the material you want to attach it to. Use a thin cloth such as a handkerchief or gauze as a protective layer to prevent damage to the material. Iron for 10 to 20 seconds with medium heat, applying weight. The key is to apply pressure. Be careful not to damage the material with heat and adjust the pressing time accordingly. *For polyester and nylon materials, especially thin ones, please be cautious. They are sensitive to heat and may melt. After ironing, the patch may peel off while it is still hot. Wait for it to cool down and check that the patch is securely attached. If it peels off, the adhesion is not yet complete, so increase the ironing temperature and time. 2. Permanent Adhesion: Iron from the back side of the material you want to attach it to. Do not forget to use a protective cloth and apply firm pressure to ensure strong adhesion. If the material is thinner than the patch, this step will allow heat to reach the film more directly, resulting in more effective iron-on adhesion. *Iron-on adhesion is not a 100% permanent attachment method, so we recommend attaching it with sewing as well. m(_ _)m