Battle Mat Board - Dungeon and Grass - Rules of Play says:
Attention Adventurers! The new must have for drawing Tabletop Roleplay battle maps! This folding battle map is the robust replacement for standard roll out PVC and paper maps which is robust, easily storable and transportable and white board marker safe! Grab your pens and roll initiative as this board will allow you to quickly draw a map for any encounter, then pop it back in your bag or on your shelf!