Custom Clear Vinyl Wall/Window Decal. With an eye-catching customized clear vinyl decal, you can welcome people into your business! This is ideal for use on windows, walls, cars, and a variety of other surfaces. It's available in a number of sizes and is made of water and weather-resistant glossy material. You can also add a customized imprint that stands out by being printed with extra-white ink. It comes in two versions: removable and permanent, and it's printed on sheets.