used top of line previously and cracked discolored left pieces all over carpet after a 2yrs. I am 128#'s and this leaves dents but rolls well. If I have to replace every 2yrs...it's worth it. Too soon to say how good it is right now. Only had 2weeks.
At first I thought that it was a mistake..it was too cheap. I decided to give it a try even though I had reservations. It's just great. No complaints here.
This mat said it was for carpeting up to 3/4" thick. I put it on 1/2" carpet which should have been even better but just sitting down in my 5 roller/leg chair for 5 minutes left dents! It was thinner than the one I had bought for way less. Poor quality product. THIN. A waste of my time!