I'm using this mat under a large heavy swivel desk chair and it performs perfectly while looking nice and is relatively inconspicuous. it stays put and doesn't curl up. The chair rolls easily on it. My only complaint is that I bought it online and had it shipped to the local store where it arrived tightly rolled and encircled 2X with wide clear plastic tape of the kind used to seal cartons for shipping. It was nearly impossible to get the tape off requiring a half-hour of picking and scraping. There has to be a better way. Somebody in the shipping department should be wrapped in that stuff and hung up to dry!
The mat is just as described and protects the carpet. Our old mat was for a lower pile carpet and had been broken up by the rollers of the desk chair. This mat is designed to prevent the chair from depressing under the weight of the chair. From the very beginning the mat laid flat since it was shipped flat and not rolled up in a box. We are very pleased with the Medium Pile Carpet Chair Mat.