These colorful butterfly iron on stickers patches are made of heat transfer vinyl material, which is soft, thin, no odor, non-toxic, and durable. They can be ironed on or sewn on, and are suitable for various fabrics, such as clothing, hats, bags, shoes, jeans, and so on. They are easy to use, you just need to cut them out, peel off the paper on the back, and then heat it with an iron or a heat press. With these patches, you can DIY your clothes, hats, bags, shoes, and jeans to make them look more beautiful and unique.