The Pilot- Frixion Erasable 0.7mm Fine Clicker Gel Pen Blue 3 Pack will make an interesting addition to your stationery kit. The best part is that you can write or draw and erase them whenever you like. This unique capped pen contains thermo-sensitive gel ink. The heat generated by friction when rubbing the paper with the special tip turns the ink invisible. Make sure to not used on legal documents, cheques or when writing an exam.