These are coasters that will protect your table and would make the perfect gift for any geek who still remembers the good old days. They are made out of laser engraved birch ply and are finished with clear matt coat. The size is a bit smaller than a regular floppy, at 3.25″x3.25″. The best bit, though, is that the set of 4 can be completely personalized with an engraved message. Pretty cool, huh?