The carpet chair mat was a perfect fit for the small area I needed it for setting up a work area and carpet didn't allow me to roll the as easily but with the mat its no problem and affordable
I bought this mat to replace one intended for uncarpeted floor which kept sliding sideways. I currently have low pile carpet where my desk is. I thought this one would solve my problems but it created a new problem (in addition to inching to the right) - - the chair wheels form sink pockets in the mat wherever they sit (and I am a small slim person) and I fight the dents when I try to shift the position of the chair. I could not recommend this mat to anyone with a low pile carpet. Maybe it works well on other some kind of floor cover but I'm not sure what that would be.
Been doing taxes for 44 years and have used quite a few floor mats. This one only lasted one year and I only weigh 130 pounds. Poor quality. Most last at least 5 years. I would not recommend this product at all - waste of money.