The office chair wheels make an indentation in the mat that makes it difficult to roll out of and my weight is 145 pounds :-) We ended up putting the old mat under the new and this works well.
The Low Pile Carpet Chair Mat is somewhat of a disappointment. The product is too soft for its intended use leaving ruts and dents in its surface and thus making it harder to roll your chair to various areas surrounding your work space.When the product was received from shipping it came rolled up! I immediately suspected something was askew.Every plastic chair mat I have used in the past has had a hard surface and does not bend nor can it be rolled.I now live with the one I have until I can find the hard surface one I have known and liked for many years.I do not recommend this mat. Keep looking until you find the hard surfaced non flexible not dentable and non-groovable one that this is.
It is a definite must have; however it does shift a bit and requires repositioning more frequently than desired. The size is generous and fits nicely. I do have a high pile carpet but would like something that stays in place better and for a longer period of time.I would recommend it unless something better can be found.