Monster Game Mats are printed on thin, double-sided neoprene.
One side of the mat is the Broken Grassland a green field of grass and plants broken up with bits of exposed grey stone and dirt. The other side is the Desert Scrubland a dry, dirty environment of sand and cracked earth.
This is an Ungridded Game Mat
The double sided Broken Grassland/Desert Scrubland is the best mat I have used. Heavy duty, stays put, good graphics. Cut mine into smaller pieces to fit table easily. Good price for large size.