4" custom shape transfer stickers; three surface options and full color printing. Transfer stickers can make your design graphics stand out while blending perfectly with other backgrounds, such as glass. Stick them on the window and you'll find the window glass looks like it's custom-made for your brand design. They are suitable for smooth surfaces, and you should avoid stacking them on textured areas, so they are usually used in car rear windows, shop windows, and trade showcases.