I purchased this for my home office and did not want to spend much. I am using it to protect my carpet but it gets a little lumpy. I weigh 150 so maybe the thickness is not adequate for this weight. For the price it is okay. In the future I would spend a little more for more quality.
The mat may prove to be too soft/too thin because depressions are forming where my chair usually is positioned. I've had it only for a week so it's too soon to tell whether it will discolor.