I have hard wood floor and use the mat at my computer desk. The only complaint I have is the mat is not big enough and the chair always rolls off the mat. End up buying another larger mat and put this one at my son's desk where he does not have a rolling chair.
So far so good. Have only had a couple of weeks but it seems to serve the purpose for which it was made. The test will be after a couple of months to see if it will crack or discolor