It is so, as I had imagined. Unfortunately, I find the supplied sponge not so super. Even as I did the first time written on the blackboard, I had long scrub until all residues were removed - was in the end though.
A bit is it probably at the pin that residues remain. I have tried other pins (Staedtler Lumocolor) who went off better!
I'm going to probably buy another (bigger and better) sponge.
All in all I am satisfied! For the price I find it super.
