From Paizo's website:
"X" marks the spot for adventure on this deadly pirate island, where a man’s life is worth less than the gold coins in his pocket and treachery awaits in every shadow! Flip-Mat: Pirate Island brings swashbuckling adventure to your tabletop, tangling your players in tropical terrors they won’t soon forget! Perfect for a side-trek away from the jungles of the Serpent’s Skull Adventure Path or one of countless untold adventures on the lost islands of the high seas!
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?