From Paizo website:
The wild forests hold dangers as deadly as those of any dungeon, and this gorgeous map sets the scene for memorable woodland encounters. From the secluded clearing to the inviting pool to the trackless wild, Flip-Mat: Forest is a perfect set-piece for any campaign, useful for random encounters or well-planned ambushes. Don’t go into the woods alone!
This portable, affordable map measures 24" x 30" unfolded, and 8" x 10" folded. Its coated surface can handle any dry erase, wet erase, or even permanent marker. Usable by experienced GMs and novices alike, GameMastery Flip-Mats fit perfectly into any Game Master’s arsenal!
On tabletops across the world, the Flip-Mat Revolution is changing the way players run their fantasy roleplaying games! Why take the time to sketch out ugly scenery on a smudgy plastic mat when dynamic encounters and easy clean-up is just a Flip away?