I bought these for my two youngest daughters to use in their wipe-clean activity books. Both of them are famous for forgetting they're holding an open pen in their hand and waving it around until they get ink all over their clothes.
Unfortunately, I am pretty disappointed in this product.
The good: they actually seem to be Reasonably washable.
Also, they are pretty fine tipped, If you can write with a light touch you can get a very narrow line. The tips are nearly brush-shaped, so you'll normally get a thicker line.
The bad: Very, very light colored. Most colors practically unusable on a whiteboard let alone in my kids' various write-and-wipe books.
Even the "black" is more of a light grey. I'd say fewer than half of the 12 pens are actually usable in any context.
Also, the caps fit so tightly that my 3-year-old cannot remove them. (Of course, some people may see this as a positive!) In our case, this means she can only use one color at a time, and the cap usually doesn't go back on properly either.
They're not much fun to use. I will probably have to deal with the marked up clothes and go back to ordinary dry-erase markers.
Bright, washable fine line dry erase markers are great for at home and on the go! Peggable blister card.