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 like that it is clear which keeps it looking fresh. Now having said that It is not thick enough to where my chair doesn’t sink in and get stuck but maybe that only happens if you are on a hard surface and not carpet and/ or you only weigh 175 lbs or less. I can say that I have had worse where it would sink in almost immediately but this one takes about an hour when sitting in one spot. Hope this helps.
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.
Great mat for the price. I was using a heavier desk chair and it did make large "divits" that were a little difficult to roll out of. I switched to a little lighter chair and it's been better. Definitely better than not having one but if I do wish I had invested in a little thicker mat.