Write smoothly and erase clean with the convenience of FriXion pens. Pilot FriXion Ball Erasable Gel Pens now come in a retractable style with the FriXion Clicker. The thermo-sensitive gel ink formula disappears with the erasing friction of a rubber tail plug eraser on the top of each pen. Erasing leaves no residue or debris and each pen can write on the same spot that has been erased. The tip is retractable by pressing clip down - no cap to lose! Each FriXion Clicker pen delivers smooth writing gel ink that is not only erasable, but it is refillable too. Note: FriXion Erasable Pens are not recommended for signatures or official legal documents. If pen is exposed to temperature that reaches 140 degrees Fahrenheit, the ink will appear colorless when writing. To restore color, cool to at least 14 degrees Fahrenheit in freezer and the ink will again write in color. Pilot Pen offers high-quality, innovative and smooth writing instruments that enable you to get it all done with style and ease.