This was a replacement for a cheaper mat so we do not know how well it will hold up under a years use. The limited lifetime warranty was the controlling factor in our purchase.
I had this floor mat on the carpeted floor of my home office for less than an hour when my desk chair (on wheels) had already pressed deep indentations into the mat. Even if my carpet pad is a little plush my carpet is not deep pile so this mat should not be indented. I guess it is not made of durable heavy duty plastic and does not have the strength to "hold up" a 140 lb person and their desk chair.
I have always used a chair mat under our computer chair in our den. The chair will not roll easily on the carpet and when the old mat wore out I replaced it with this mat. It is really nice doesn't have those ouchy sharp cleats on that old ones had and the chair moves easily on it. It's great and a good value.
I use this mat under the office chairs in my insurance business. The mat quality is much thinner than they used to be. One of main complaints is that the mat was rolled and tape that they used left a residue that we can't get off.