FriXion ink is a thermosensitive ink that can be erased by rubbing. To erase, use the special rubber “eraser” tip at the top of the pen and watch the ink cleanly disappear.

Interestingly, erased ink reappears at temperatures below 14° F (-10° C). A freezer is cold enough to make this happen. It is like magic ink for adults! Due to the thermosensitive nature of FriXion ink, JetPens advises against using it for mailings, or leaving the written materials in hot cars or in environments that expose them to a lot of friction.

Note: this Ball Clicker pen is the US version of the Pilot FriXion Ball Knock Gel Pen, and differs in body style from the Ball Knock. The Ball Clicker Turquoise and Navy ink colors are the same as the Ball Knock Light Blue and Blue Black ink colors, respectively.