The fancy duo spy marker pen light blue in color is ideal to be given off as a gift or even to be added into a stationery collection. The pen can be written and marked too, which means that it is a dual pen, with one side a blue ballpoint that can do the normal writing, and on the other side is this invisible marker, that makes learning quite fun, and for all those who wish to write up some secret messages.
The build of the pen is solid, making it wear and tear proof and is also donned with a UV light, so as to make visible all that is written by the invisible marker.