I have the very large (36 X 59 inch) white mat from Jo Ann's, but not sure of the brand as it does not say. I just assumed it would be self-healing, but it is not. It is OK for cutting fabrics, but when I cut batting, it stays in the cuts and is horrible. I have furry lines all over the mat. I have not noticed it being hard on my blades however. I think next time, I will just buy 2 of the Olfa mats and duct tape them together.