As a stylish accessory, the durable twill fabric patches can add more color to your apparel or be used to give your worn-in clothes a second life. Attach them in 3 ways: by ironing on, sewing on, or using safety pins. - Twill fabric (26% cotton, 74% polyester) 3″ (7.6 cm) in diameter Attachment options: iron-on, sew-on, or safety pin