* Special self-erasing ink (purple ink) gives a sharp, clear line which gradually fades away in about five days depending on the humidity.
* The smooth rolling ball tip enables you to mark fine, even lines and create smooth curves.
* Lines can be removed with a shot of steam or wetting if desired.
* It has a fine ceramic roller ball point tip - not the hard and scratchy nylon tip.
DEMO:https://www.youtube.com/watch?v=CqBA7_grET4
