The green mat surface was peeling off in strips, leaving the white underneath. It peeled on front and back like this. The Olfa company did replace the mat after I posted about the problem here but not when I first contacted the company about the problem on my own. (This board is powerful. :thumbup: )
A quilting buddy of mine has the same mat bought the same time I bought mine and she told me her mat was peeling away in strips. I told her that was just what mine had done and I got a free replacement for it. I gave her the info to contact Olfa about it. I don't know why the mats are doing this but it seems one batch may have been defective. If you have an Olfa mat and it it is peeling like the one in the picture please be sure to contact Olfa. It's a shame for someone to think all the olfa mats are bad and never buy another and double shame to be stuck with a bad mat.