It has take over a week for the flat pile carpet chair mat to somewhat smooth out under my office chair. It has made mobility around my desk area easier to do which is a main point of why I purchased it. Also the mat was on sale! Overall I am pleased with this purchase and believe it was and is a great investment.
Make sure to give them time to "air out" or it smells like something is burning. They are sturdy and have worked for our workstations well. This is a good size.