I can't really say anything about this product because I haven't had it very long. the last time I bought this product was five years ago. I have berber carpet and a light weight office chair. at this time it seems ok.
The chairmat is adequate for the job. It is not as thick as it could be so my office chair wheels have made permanent grooves where they sit. I don't find it easy to roll on and I thought it was expensive for what I got. I didn't want to pay anymore money so I got the cheapest one they had.