I bought the first one and it had a large crease from the second crease. If you fold the mat against the crease you will see that it is white which means the crease has hardened. You have to melt it down to get it out and I don't have to fix what I just bought. I sent it back hoping the second one would be good. Had not. The second also came folded and with a crease. I am returning this and will look for a different brand or seller.