Chopper Cross Biker Tattoo Skull Rocker Sew-on Iron-on Patches Embroidered Applique Badge Vest The patches are coated with a special glue that melts due to heat and thereby connecting well with the textiles. Place the patch on the desired position and ironing on with the iron. If necessary, sew the patch. Our Iron-on patches are ideal for repair or decoration of: Clothing, trousers, jeans, jackets, vests, shirts, T-shirts, hats, bags, cushions, car covers, etc... 3.4 x 3.4 inch We ship directly from Thailand.