I had wanted to upgrade my cutting mat to a larger size to fit my table. Couldn't find the self-healing type my size so decided to make the table to fit the mat. I went and got an Alvin self-healing mat. Green on one side, black on the other side, both with measurements. I went into Google and put in self-healing and it came up with a couple of sites. One was cutting-mats.coms. Another type of mat is called "rhino" which is a very sturdy mat too. Yes, the larger the size, the more expensive but I found it worth it to me. My blades were going dull too fast and now I don't think I've had to change my blade in 6 months of cutting. Well worth the price I paid.