Also, the description says "Permanent and waterproof" in a couple of places - only a very small subset of the de Atrementis ink line fits that description - most of it is not waterproof at all. Just FYI.
ironhelixxThanks for noting this @ironhelixx, that language has been removed. That would apply to their line of Document inks, which are not part of this drop. I'm curious to know how important a factor that is to you and other members when considering different ink choices.