Shamrock Decals & Stickers Our decals can be easily applied to windshields or any smooth surface, including vehicle bodies and walls. We offer customized die-cut decals and lettering specifically designed for your car or truck windows. We use only high-quality exterior vinyl films from Oracal and FDC, ensuring 5 to 7 years of indoor and outdoor durability with bright, vivid colors. Installation is simple, and easy-to-follow instructions are included with every order.