The chair casters still leave a dent in surface. If you move it they “heal” but not sure of long term life. Also doesn’t appear to have longer “ spikes” for thicker carpets.
The plastic mat does not do what is made to do. The mat is in the den on an area rug with a office style chair. The plastic mat slides all the time as the chair moves. Very disappointed. Does Staples have a different and better plastic mat?