The Tim Holtz Media Surface Mat is the perfect heat-resistant, easy clean mat for creative mixed media crafters! Designed to perfectly fit over the entire surface of the Tim Holtz Glass Media Mat in 13.5 in. x 23 in. size or the Glass Media Travel Mat in 15.5 in. x 10 in. size. The Media Surface Mats come with a non-slip base and reinforced stitched and weighted corners to avoid unwanted rolling.