Despite being well - challenged by my weight (around 210#) and the weight of my oak office chair, the mat doesn't seem to "dent" badly at all on plush carpet with thick foam pad

We have a home office with thick, plush carpet.

I purchased this one because I had dense carpeting installed in my home office, and I hoped this mat, supposedly designed for thicker carpeting, would not constantly shift under my chair

The carpeting in my office is plush, with padding, and the the total thickness of the carpeting and pad is not quite 3/4", yet, after only about 5 minutes of sitting in one spot, the wheels sink into the mat to the point where it takes a bit of an effort to move around in my chair

protects the carpet and allows my work chair to roll around with ease

It's used in a home office on a plush carpet.