This is my must have school supply staple product! I have been using this eraser for such a long time! I absolutely love it, its very great at erasing mistakes you made. It also doesn't make your paper wrinkle, while other erasers I have used in the past made my paper do. I love that they come in a value pack of 4 that makes it worth it! They last me a while too so I don't run out too quickly in a school year!