Description: Iron-on or sew, Scuba Diving Alpha Flag / Diver Down Flag Patch with Detailed Embroidery The Backing is an iron-on backing that can also be sewed for further durability Perfect for Jeans, Jackets, Vests, Hats, Gear Bags, Scrapbooking and more This patch makes an incredible souvenir for any Scuba Diver Iron-on patches will not come off Specification: Material: Polyester Size Chart: Size 1 (Blue White): Approx. 4.5 x 3 cm / 1.77 x 1.18 inch Size 2 (Blue White Red) Approx. 6.35 x 2.54 cm / 2.5 x 1 inch Size 3 (Red White) Approx. 5.5 x 4.5 cm / 2.17 x 1.77 inch How to use: Generally, the area is not large, and the thickness is about 0.1 cm. The fabric has a wide application range and is the easiest to use. 1. Keep the back side clean before ironing, and adjust the temperature to the temperature suitable for the clothes according to the method of using the iron. 2. Put the cloth on the appropriate position (do not tear off the glue), burn it back and forth a few times, usually burn for about 15 seconds. 3. In order to prevent burns, you can put a thin cotton cloth on the cloth (must be cotton, not a faded cloth). After ironing, check the edge to see if it is hot, and burn a few times on the edge. 4. The best way is to use a needle to sew a few stitches on the side of the cloth after it is iron. This is more firm and very compliant. Package Includes: 1 Piece Dive Flag Patch (4 Pack) Note: Due to the differences between different monitors, the picture may not reflect the actual color. There is 2-3% difference according to manual measurement, please check the size carefully before you buy the item. Thanks!