They measure 24'' by 30'', and quickly and conveniently fold down to 8'' by 10'' (slightly smaller than a sheet of notebook paper). Pathfinder 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. Usable by experienced GMs and novices alike, this product fits perfectly into any Game Master's arsenal!