The mat is supposed to be for carpet. Unfortunately the plastic is to flexible and the chair wheels sink into the plastic which makes it difficult to move the chair. Would NOT recommend.
Inexpensive but not cheap. It does what it is supposed to do and looks great. It does tend to have dents from the chair legs but not terrible and so much better than carpet alone.
I thought carpet chair mats were the same but because it's hard for me to roll on I probably should have ordered an harder mat. I guess it depends on the thickness of the carpet.