Woolwax window decal 6". This is made to be installed on the outside of the vehicle. It is a removable glue so it can be easily removed if needed. Although I can't think of any reason you would ever want to.
Only $2.00 ea (to cover postage) or 3 for $5.00
These are also available at no charge when you place an order for most items. Just check under the "options" section.