This is a set of iron-on patches. ■■How to Apply Iron-On Patches■■ ① Place the patch on the desired area without removing the backing film, cover with a pressing cloth, and iron firmly. ② Set the iron to approximately 100°C to 140°C (medium heat) and apply pressure for 10 to 20 seconds. ③ To ensure the adhesive melts properly, iron the back of the fabric for about 30 seconds. If you don't have an iron, you can also sew the patch onto the clothing by hand. Note: Iron-on adhesion may weaken depending on the fabric, or may come off after frequent washing. It is recommended to sew around the patch after ironing. You can personalize bags, pouches, jeans, jackets, caps, and fabric shoes with these handmade patches! Great for kindergarten and school supplies such as: changing bags, lunch bags, lesson bags, drawstring bags, mobile pouches, tissue cases, play clothes, colored hats, and iPhone cases! Perfect for preparing for kindergarten and school.