This chair mat was chosen because it was thicker than others and it was for rugs with 3/4" pile (which mine is). However when used it immediately started getting indents. Each of the chair's wheels formed a dent and I had to push to move the chair up out of those dents. I weigh 148 pounds. Apparently the material is thick but soft. Will return it.
I don't think it's very sturdy or will be long lasting. Its too thin and my chair leaves indentations when it rolls. I've had it 3 days and it looks like its been here for months. Its not the right product for people over 150 lbs or that use it repeatedly.