These mats, first made available in 1981, have become the standard for vinyl game mats. Using water-soluble overhead-projection pens (NOT dry erase, grease pencil, or permanent markers), you can write on the vinyl and remove later with water when the adventure is done. Overall mat size is 34.5” x 48” (88cm x 122cm). Used with games from Wizkids. Scale is a bit larger then the reaper minis or D&D titles.