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.
*had very limited dollars to spend *was designed to be used on a thinner carpet but working well even with padding *have not owned long enough yet to rate durability *could be just a little larger especially the portion that fits under the desk