A good serviceable mat for the money. Would have preferred a rectangular mat of the same dimensions without a lip but for the price I can live with it. Only downside is that previously purchased mats of the same kind have tended to crack and break apart after only about six months of use. These do not smell of polypropylene for a time after installation as do some competitors.
We purchased this mat for our home-office and we are very pleased with the result. It covers the space we needed and so far it has done the job of allowing the desk chair to roll easily on the carpet. We would recommend this mat to all.