Pathfinder Flip-Mat: Rivers Multi-PackRivers 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!