Rivers are lifelines for communities throughout the world and make for exciting and dynamic encounters. Whether your PCs are defending a bridge, fording an icy flow, navigating a deep canyon, or assaulting a mill that an evil wizard has holed up in, Pathfinder Flip-Mat: Rivers Multi-Pack has you covered for a variety of river-based encounters. A special coating on each Flip-Mat allows you to use wet erase, dry erase, AND permanent markers with ease! Removing permanent ink is easy -- simply trace over any permanent mark with a dry erase marker, wait 10 seconds, then wipe off both marks with a dry cloth or paper towel. Each Flip-Mat measures 24" x 30" unfolded and 8" x 10" folded.