In just a week my chair has formed near permanent dents in the so-called carpet mat. The mat is clearly substandard and cannot be used on anything except a hard floor. Very disappointed.
We have a low shag carpet and this is too weak to hold its form. Dimples are starting to form and the chair is becoming difficult to move. This might be good on very low tight pile glue down carpet that you see in office buildings but don't use it for your home carpet.
I needed something to protect my carpet while I am temporarily working from home and this fits the bill. If I were going to work from home on an ongoing basis I would spend more to het a better one but this will do. It is already getting "Dimples" from the chair wheels but it is doing the job and the price was easily affordable. I would recommend it.