Pilot FriXion

A range of erasable pens, highlighters and markers made by Pilot, first launched in Europe in 2006. FriXion ink is thermo-sensitive: rubbing it with the pen's eraser heats it above 60°C (140°F) and makes it invisible, and very cold temperatures can make erased marks reappear. The range includes the FriXion Ball, FriXion Clicker, FriXion Point and FriXion Light highlighters.

Text from OyList