Easy to apply. vehicle window or bumper sticker. the application area must me clean, dust free and dry. instructions provided with your purchase. the product comes to you for application on the outside of your vehicle. if you would like the product printing in a different colour we can do this for you. We have Black, Red, Yellow, Blue & Pink vinyl. please email us as soon as you have bought and paid for this item if you would prefer a different colour to white. we despatch this product next working day second class post.