Good for hard mat carpet - not the best for pile carpet as the plastic is too thin causing indentations which create ruts making the office chair hard to move.
The mat arrived rolled up tightly in a box. It was difficult to unroll and required two people to finally get it down flat and under some weights. But once flat it has been a fine improvement.
The chair mat is a bit too soft. Chair wheels indent a bit making it hard to roll. Mat is being used over a medium pile carpet. The mat may not be well-suited for my application.
It did what it was supposed to do however it is thinner than I thought and as a result of that it dimples easily so it does create divots and you have to work to move around. If it were a little thicker that may be corrected