Marvin the Martian Magnet Decal 5.5" in size. in the United States Marvin the Martian Magnet Decal is 5.5" in size with free shipping in the United States. Made of High Quality Material Designed to take a beating outdoors for years. 3 year outdoor warranty. Complementary Flag with each order. Designed and produced in the U.S.A. Our magnets will stick to most anything.