Using this Harry Potter magnetic bookmark is a breeze. Just open your book to the page you want to mark, then place the bookmark on the edge of the page. The magnetic force will keep it securely in place. When you're done reading, simply remove it and close the book. To keep your bookmark in great condition, avoid bending it or exposing it to extreme heat or moisture. If it gets dirty, you can gently wipe it with a soft, dry cloth. Enjoy your reading with this awesome Harry Potter Marauders Map bookmark!