1.Combines the convenience of a retractable with the incredible  erasable gel ink<br /><br />2.Erase and rewrite repeatedly without damaging documents - Eraser is at the top of <br /><br />the pen， tip is retractable by pressing clip down.<br /><br />3.Unique Thermo-Sensitive gel ink formula disappears with erasing friction<br /><br />4.8 colors:Black， blue， red， orange， purple， navy blue， green and rose red