Japanese Pilot FriXion Erasable Tricolor Pen

The Erasable Rainbow Is In Your Fingertips with this Japanese Erasable Pen
 
Sometimes you only want one pen that can do it all. This magically erasable pen has three ink options (black, red, and blue) — so you can enjoy convenience, function, and creativity all in the same pen.
Like magic, its thermosensitive ink turns invisible when rubbed with the special friction \"eraser\" built into the top of the pen.  Black, blue, and red ink all in one sleek pen body: this Pilot FriXion Erasable Tricolor Pen is the ultimate multitasker for your office.