Deflecto ExecuMat High Pile Carpet Beveled Edge Chair Mat

[...]The product is a chair mat which sits atop a quality berber carpet. Generally, the chair mat is serving its purpose. My only complaint is that the medium sized rollers on my chair still create "dents" in the mat. I didn't expect this with a mat which cost [$].I weigh approximately 210 lbs. I decided to keep my old mat and place it under the new one for added support. This has helped somewhat. I'm not sure there is a solution to my issue. The mat I bought seemed to be the best available based on my research. I would recommend this mat but with the noted qualifications.