I allso have been in the mood to buy a new mat and have been checking out Olfa's mats what I have noticed is some of the Olfa mats are thinner then others. The same as a Frisker mat thinness, where some are thicker. On the thicker ones it says self healing but I couldn't find that being said on the thinner ones. So I have to wonder if there are two different mats made by Olfa now.