This ILMILY gel pen features an amazing ink that changes color when you rub it with the special friction eraser on the end of the barrel! It's perfect for making color-coded to-do lists and study guides where you can see at a glance which thing you have and haven't done. It's also really fun to doodle with.
The secret to the magic is a special thermosensitive ink similar to the kind used in Pilot'sFriXiongel pens. The color can be changed by any source of heat, so we advise against leaving any artwork or unfinished to-do lists in a hot car.
