Although most of our United States Marines Aircrew Flight Suit Patches includes 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. One of these Patches - Flight Suit is a great way to identify the Aircrew specialty and training that you or someone you know worked so hard to achieve in the Marines. These Flight Suit Patches measure approximately 4 1/2 x 2 1/2 inches. Your satisfaction is guaranteed, period. Usually ships within 3 - 5 business days.