Staples Low Pile Carpet/Berber Chair Mat, 36" x 48"The Staples Low Pile Berber Chair Mat protects the carpet in your office to keep it safe and undamaged from moving chairs. This rectangular 36" W x 48" D mat is made from tough synthetic polymers to cushion your rolling office chair and keep your carpet looking great. It is ideal for use on loop and Berber low pile carpets up to 3 8" thick, including padding. The mat's tooth free design will stay flat against the carpet and will not tear at the fibres.