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 store 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 attract the holder to hold the placard in place. Before your drive, simply pull down the plastic holder to unlatch it from the hook, and snap it on to the storage magnet you mount where you like and out of your line of sight while driving to avoid costly fines. MirorTag has a super strong magnet that keeps the placard and hook held together while parking, and to storage magnet while driving. Unlike all flimsy sheaths with breakable built in hooks, Mirortag hook is sturdy and sun & cold-resistant. For hard plastic holder, look for our Mirortag Gold models. Extra hooks can be purchased separately for multiple cars. WARNING: rearview mirror built-in compass operation may be affected by the magnet on some car models. Tag size: 4" W, 10" L. Hook diameter is 1 inch maximum. Sale is for holder and hook and storage magnet only, and placard is not included, and shown only to clarify how to use it. Patent Pending & Made in USA.