Its a classic item, can never have to many of them!
I remember all through school casually connecting all the pens together to touch the ceiling!
Strong felt tip and big ink reservoir keep pens ready for use.
Water based
Pen caps click to each other or pen barrels to keep all your markers together
Safe colours stay on your paper but not on your clothes
Mod: Price does show up on product page.
That makes my kid happy :)