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 once. When parked, move plastic holder close to Magnet Charm and the 2 snap together to hold the placard in place. Before you drive, simply pull down the plastic holder to unlatch it from the Magnet Charm. MirorTag has a super strong magnet that keeps the placard held in place. Unlike all flimsy sheaths, this one has a sturdy Magnet Charm that is sun & cold-resistant, and will not break or melt. Check out our store for other MirorTag and Visortag models. Extra Magnet Charms can be purchased separately for multiple cars. WARNING: some rearview mirror built-in compass operation may be affected by the magnet. Made in USA.