Proud Sister of a United States Soldier Car Magnet. Show your support and let the world know you have a brother or sister who is serving our great country as a United States Soldier. This is a durable magnet that is 30 mil thick. This item is printed with the newest most durable printing method, direct UV ink printing. This flexible magnet is suitable for indoor or outdoor use. Will cling to a clean metallic surface. Perfect for attaching to a vehicle. Will hold during normal driving conditions. If you go to the car was make sure you take it off and then re-apply it when you wash is done to avoid it coming off during the scrub process.