These High Quality Iron On Heat Press Patches can be applied to denim, 100% cotton, and polyester/cotton blends on light and dark colored garments. They can be applied to robes, hats, bags, t-shirts, sweatshirts and so much more! Size (Approx) : 2 inches Tall by 3 inches Wide Backing: Iron On The patches can be applied with an iron or a heat press, or fabric glue.