Unfortunately it keeps sliding forward and the front gets curled. I have pulled it out twice already. Going to have to find something heavy to put on it.
Does not work well on medium pile carpet. The supporting studs that penetrate the carpet pile are too short resulting in dips and sagging under the chair wheels.
The mat is fine in and of itself. However it was shipped rolled tightly. It took a lot of effort to unroll the mat. I have had it laying on the floor for several weeks now and the edges still won't lay down. I am afraid I will trip over the edges if I don't remember to pick up my feet. I have had weights and boxes sitting on the edges but they haven't helped much.
Order was received quickly & in excellent condition. Extension goes into knee hole plenty far. Mat works quite well enabling me to move my office chair as needed without worrying about tearing up carpet. It also moves MUCH easier!