Mechanic Patch is an embroidered iron on patch measuring 4x1.5 inch. Apply it to your clothing by sewing it on or ironing it on. The patch features die cut borders for easy sewing and iron on backing for easy iron on application. Please do not iron on patches to leather or nylon material. Please remember using a household iron will not produce professional results. Both heat and pressure is required to adhere an iron on patch properly to a garment.