It looks good and grips well on my very low pile carpet. Of course I've only been using it for a week -- companies always ask for ratings very quickly -- so there's no way to predict how good it will be over time.
Unfortunately the chair mat leaves dents in my carpet. My chair leaves dents in the mat and rolls always to those dents. I have to force the chair out of those dents. I bought a similar mat from Amazon and it does not leave dents. Cannot understand why yours does.
So far I really like our mats. They are a little smaller than the ones we had but still work just fine. We'll see how long it wears. I get about 5 years our of most of them.