Purchased it to protect our carpets but it has a very uneven surface to roll your chair over. It also has a strong smell that no one in the office could stand. Had to air out the office and remove the mats.
The labels says that it is an economy mat for commercial carpeting as found in an office. If you try to use it on the type of carpeting found in a typical home the mat is too soft because the carpet is too thick. I am afraid that over time it will start to develop indentations from the chair wheels. It is good for saving a few dollars as the thicker mat was twice the price but you get what you pay for and need to match the mat with its intended use.
I use the mat under my computer chair to protect the wood floor. The top layer of the varnish/shellac on the floor was starting to peel from years of the wheeled chair rolling back and forth over it. The mat is exactly what I was looking for.