Description said good for 1/8th inch flat pile which matches what the floor covering I have. I'm average weight and my chair wheels make a depression in the mat. So the wheels don't roll very well.
Got the mat home and placed it on my bedroom carpet. I weigh 210 and am using a 25-lb. 5-leg desk chair. The Staples economy chair mat now after 1 week has permanent dimples where the chair wheels sit when I am rolled up to my desk. I believe this chair mat is too thin.