I bought this to replace one that had cracked. It was three years old. This one does not seem as sturdy. Feels so much thinner and is much lighter. I'll see how it holds up.
Felt pretty heavy duty in the store. My carpet is only 1/2" thick but mat dimpled where chair sits almost immediately making it very hard to move the chair. Was supposed to be good for carpets up to 1". I only weigh 170 lbs and my chair has 5 rollers. Very disappointed.
The size is a perfect fit. However I don't know how they are rated for carpet thickness. This mat was rated for 'medium-pile' and I thought it would be extra heavy to use on my 'low-pile' carpet. It was not. Though rolling is easier it does dent if I sit in one position for for a minute or two also because it is so flexible even with the cleats the mat creeps. I'm concerned that the constant flexing will cause premature cracking.
This mat is heavy and I had high hopes for it doing the job. However indentations form under the chair castors so I periodically have to rotate the chair base to put the castors in a different position. Also the mat does not stay put on the thick carpet; periodically I have to move it back into position. I cannot spend more on a heavier -duty mat so I will probably keep it.
I kept this chair mat only because I used got it at a discount with a coupon and didn't want to hassle with taking it back. It is pretty small doesn't give much room to move your chair and it is not heavy enough to keep the chair wheels from denting into the carpet after you sit in one spot for a little so it is then hard to move the chair. I have another chair mat that I bought years ago that doesn't dent at all on the carpet wish I could find another one like it.