Three color set contains: pink, yellow, and orange.
These FriXion highlighters come in a light florescent ink color, perfect for highlighting in textbooks and over notes. The highlighters erase by friction. The highlighters have a special rubber end to rub the thermo sensitive ink away with, thus no eraser by-products are produced, yet your highlights disappear magnificently.
Interestingly enough, the ink in FriXion pens will actually reappear when the temperature reaches below -10 C (under 14 Fahrenheit). A freezer is sufficiently cold enough to make the ink start to reappear. It is like a magic pen for adults!
Because the ink in FriXion pens are thermo sensitive, we do not advise for them to be left in hot cars, used for mailing, or subjected to a condition that exposes it to a lot of friction.