<b>Instructions For Use<br /><br />1. Please use the special refill provided with the product to write, If you use other pens to write, the handwriting will not disappear.<br /><br />2. Use the refills that match this copybook to write, the handwriting will disappear over time, and you can write repeatedly. The time for the writing to disappear is related to the external environment, such as temperature and humidity.<br /><br />3. Our products will help ours kids to correct or develop standard writing habits. After the habit is formed, they can be independent of magic copybook and write standard and beautiful handwriting."<br /></b>