Help the parents of your students shows their pride wherever they drive by offering this custom car magnet in your bookstore. These magnets measure 24 - 27.99 square inches and they're 30 mil thick. They are made from non-toxic flexible material in the USA and can stand up to outdoor conditions. Care statement will be automatically printed on the product and reads: Magnetic Signs - Apply to flat metal surface, remove weekly for cleaning. Made in USA.