Protects carpet. This mat replaces a cheaper mat which was not thick enough and failed. This mat is thicker and rolls better. It must last 10 years for me to feel really great about it.
The small size makes this perfect for use in tight areas. It doesn't have to be trimmed to fit as a larger one would. Bought one to cover my laminate floor in the bedroom. Just bought a second to protect the floor in my small kitchen workspace.
That new plastic smell disappeared in a few days. This chair mat works well on the carpet and is big enough for my task chair and a small rolling file. Perfect!