These High Quality 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): 2.5" x 2.25" inch • Backing: Iron On The patches can be applied with an iron or a heat press, or fabric glue.