An alternative to the external sticker, these internal ones simply stick to the inside of a window, and can easily be removed and applied to another vehicle if you change vehicles anywhere near as often as Ian does! We're not sure for how long they remain removeable, as endurance testing stickers isn't something we normally do. We don't keep cars long enough...Because there are several colours, the price of this sticker is slightly higher than our basic one. We've now amended the website so it's in white and actually visible.It does need fitting with care to avoid bubbles. Use a credit card or similar to push the air bubbles out as you fit the sticker and ensure the window is completely clean first (unlike our demo pic!).Also ideal to add that classy look to your home or garage.