This is very stiff. So it does not stay flat on the floor. Chair rolls too easily on it. Had I seen it before buying I would never have bought it (ordered online without seeing).
I liked the old mats that had graduated edges as opposed to what is available now. It is sometime difficult to go from the carpet to the mat and the wheeled chair get stuck.
I am using this product on top of a low pile carpet and it works well. It is colorless so it is not distracting. It stays securely on the carpet and can be easily wiped. The only "con" was that the tape around the rolled up mat needed to be cleaned off with an all purpose household product (took some elbow grease) but Staples Customer Service said that they are working on this with the manufacturer.