GameMastery Flip-Mats are designed to make your game portable and affordable. They're crafted with durable, laminated card stock and can handle dry erase, wet erase, and even permanent marker! GameMastery Flip-Mat: Basic features a 1"-square grid on both sides. One side features a stoney-grey patterned background, and the flip-side features a sandy-brown texture. The 1" grid extends fully to the edge of the maps for a full 720 square inches of usable area.