These High Quality Don't Duck with Me Don't F*ck with Me 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): 2.6 inches Tall by 2.6 inches Wide • Backing: Iron On The patches can be applied with an iron or a heat press, or fabric glue.