I bought this as a combo since I was buying a new computer chair and so far I love it. It provides protection on my floor carpet and makes the new chair easy to glide over. No rips tears permanent indentations etc. I have nothing but good things to say about it. We shall see how long this holds up as I have only had it for about a week.
Wish I had purchased one with "teeth" on the bottom to keep it in place. This one slides around on the carpet pretty easily so has to be readjusted at least once a day. Otherwise fine though.
This is a great size for the desk it's being used at but I do not think this will hold up much longer than a year (if that). It was measured as a medium pile carpet but the "treads" on the underside of the mat are not deep enough to prevent flexing and depressions. Looks great at the moment however.
Not paying close attention I ordered bare floor mat when I should have ordered the carpet one but it works quite well on the carpet. The computer chair glides much more easily.