protects my wood floor from my office chair's wheels. I haven't had it very long but it does the job and is competitively priced. If you don't have a chair or anything else on it it may slide when you step on it (on a wood/smooth floor) so be a bit careful.
We had carpet squares put in our new offices abd my chair stuck to one spot like velcro. It flipped me sideways and I hiy my head on the metal table going down. With this new chairmat I feel safe and have no more problems with my wheels getting stopped by the carpet and I won't have to go take riding lessons to keep from getting thrown under my desk by an unruly chair with an attitude. I think everyone who has a chair that has qualified foir the rodeo ought to get one or two for their desk area and a spare just in case.