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, attach the Magnet Charm to rearview mirror post and adjust ball chain to desired length. When parked, move plastic holder (white text on top facing windshield) close to Magnet Charm and the magnet will snap onto the metal plate of the holder to hold the placard in place. Before you drive, simply pull down the plastic holder to unlatch it from the Magnet Charm. MirorTag Charm has a super strong magnet that keeps the placard and Magnet Charm held together. Unlike all flimsy sheaths, it has a detachable sturdy Magnet Charm that is sun & cold-resistant and will not melt or break or we will replace it free. Holder will protect your placard from cracks, tears and creases. Extra Magnet Charms can be purchased separately for multiple cars. WARNING: rearview mirror built-in compass operation may be affected by the magnet in some car models. 2 holders and 2 Magnet Charms included. Sale is for holder only and placard is not included, and shown only to clarify how to use it. Patent pending and Made in USA.