Personalize & decorate! These 8-inch tall iron-on polyvinyl letters have a smooth flexible surface. These iron-on t-shirt letters are easy to apply, machine washable, and very durable. Simply iron onto a heat-resistant material like T-shirts, sweatshirts, jerseys, uniforms, bags etc. Recommended for use on cotton or cotton/polyester fabrics. For the best results, prewash garment before applying, machine wash cold, and let air dry.