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.
I wasn't sure which mat to guy with the carpet I had. Perfect mat for my desk chair in my home office. Wide enough stays in place and easy to roll around in. Great buy for the price and would highly recommend.