I would have given it 5 stars but I think the height/consistency of my carpet (even with the mat) is still an issue for my chair to roll over it. However its still better than my chair attempting to just roll across carpet lol.
We came we saw we bought. It fit it laid flat over the fairly plush carpet it was easy to install and the chair rolls easily on it. Could not ask for more.
Needed it as to save what is left of my carpet. Which isn't much it helped stop getting those dents in the carpet from the wheels on the computer chair. Works like a charm!
Went to purchase chair mat in store. This was only model they had. Too thin. After only a few hours rollers on chair created permanent divots in mat. total waste of time and money.