Unique patented thermo-sensitive Frixion Ink • A fun loving products for making notes, drafts, poem, diary writing, sudoku, puzzles etc. • Erase and rewrite repeatedly without damaging documents. No wear or tear! • Comfortable dimpled grip & inbuild eraser • Erasable pens are not recommended for use on legal or official documents. Do not expose to extreme temperatures (140?). If pen is exposed to temperature that reaches 140?, the ink will be colorless when writing. To restore color, cool to at least 14? in freezer and the ink will again write in color. • Eraser is at the top of the pen, tip is retractable by pressing clip down