The FriXion line of pens write smoothly and erase cleanly so you can erase every 'oops' (the written ones, at least). FriXion offers you unlimited do-overs so you can write, erase, and re-write until you get it right, without any wear or tear to the paper or messy eraser crumbs. The heat generated by erasing friction causes our unique thermo-sensitive gel ink to become clear so the words disappear completely from the page. Mistakes are a thing of the past with FriXion. Now nobody needs to know it wasn't perfect the first time!
Note: Erasable pens are not recommended for use on legal or office documents. Do not expose to extreme temperatures (140 ?) If pen is exposed to temperature that reaches 140 ?, the ink will be colourless when writing. To restore colour, cool to at least 14? in freezer and the ink will again write in colour.