I purchased the mat that's advertised as 24x36. It isn't that size. The actual width of the mat is about .5" less in both directions, and the grid only goes to 23x35. However I decided to keep the mat anyway, since it does seem thicker than my Omnigrid mats, it is printed on both sides, and I wanted a mat with a different color since it is sometimes hard to use the green Omnigrid mat with some colors of fabric. I'm just disappointed that it isn't the size that was listed.