This mat does its job but I think it would work better with a lighter chair. Our chair is heavier than most so it can still sink down in the plastic. The chair does move easier than it did on the carpet.
Overall the mat is good. It did it’s purpose but the plastic isn’t as hard as I expected it to be. It will mold to the weight of the chair if in the same spot for some time. But other than that it’s good.