Now this is neat! Did you ever highlight something that you did not want to highlight? Well, this 'highlighter' will 'un-highlight' your highlighted stuff. It is almost unbelievable to see. AND, it unhighlights other highlighters marks too, not just made by this one. It also says "Genealogy - the highlight of my life!" so you won't get it mixed up with all those other pens and markers in your desk. One end is the highlighter and one end is the 'un-highlighter'. Even kids and students of any age loves these!