Although most of our USA Patches have an iron-on backing, we recommend that you sew them on for longer lasting results. Our Patches are made from colorfast threads on heavy backing to keep their shape and good looks. Show your Patriotic Spirit everyday with these Patches. Let others know of your pride in your Country. These Patches measure approximately 3-1/2 inches. Your satisfaction is guaranteed, period. Usually ships within 4 - 7 business days.