This chair mat is a typical vinyl product. I purchased it for my recently renovated home office. Unfortunately with the thin vinyl material combined with the carpet padding the chair wheels leave divots in the mat and to a lesser degree the carpet below. I would only try using this mat over the thinnest of carpets without padding. Otherwise I would avoid it.
I purchased this mat on 4/13/20 - and it already is cracking in several places. So after a little over one year of use on carpet - the mat is basically junk. I will absolutely think twice about buying another one in the future.
the mat is very thick. It does not sink into the plush carpet. I have a computer table sitting on it and it does not wobble. I am very pleased with this mat.