These are very impressive. For the most part, they write really well (my blue one did, my red one, not so much, but red pens in general of any kind seem to have that tendency), but they erase SO CLEANLY, it's pretty incredible! The design is a bit misleading, though, because of the eraser and the title "clicker," it did take me a bit to figure out that it doesn't click on the top as it would on a normal pen, but on the clip, which is very unusual. Otherwise, these are awesome! I can't wait to pick up more!