It is illegal in all states to drive with your handicap tag hanging from the rearview mirror, but it is not easy to hang and remove the placard as required by law. Mirortag is designed to protect and preserve your tag. It allows you to easily display and put away your handicap parking placard. Simply insert your tag into the plastic holder, place the hook on rearview mirror once. When parked, move plastic holder close to hook and the magnet will snap onto the metal plate of the holder to hold the placard in place. Before your drive, simply pull down the plastic holder to unlatch it from the hook. MirorTag has super strong magnets that keeps the placard and hook held together. Unlike all flimsy sheaths, its sturdy hook is sun & cold-resistant, protecting your placard from cracks, tears and creases. MirorTag is offered in 3 versions, MirorTag Bronze, MirorTag Silver and MirorTag Gold. Both Gold and Silver share the same hook, with the plastic holder is thinner in the Silver and Bronze models (18 mils) vs the Gold that comes with a sturdier plastic (60 mils). Extra hooks and magnets can be purchased separately for multiple cars. WARNING: rearview mirror built-in compass operation may be affected by the magnet. Made in USA.