it's a pretty good product. The only thing that i dislike is that it kind of weak and after a few minutes sitting in my chair it develops divots under the wheels that sink down into my carpet making it hard to move on the wheels of my chair. After I get up it takes about 30 minutes for the mat to rebound to flat again.
This mat is the perfect size for my desk. However it was shipped in an open top box with tape across the entire opening sticking to the mat. My husband and I have spent over two hours trying to remove the glue residue from the tape. We finally gave up and hope that it will wear off but in the meantime my chair casters stick as I roll across. Not sure who made the unwise decision to ship it this way but it has changed the way I feel about ordering online (which was my only option for this size mat). I would have returned it but was afraid that the replacement would come the same way and we'd start all over.
Item is fine for the price plastic is thin and chair leaves indentations but still better than having the chair directly on the carpet. Mat does slide away from desk over time and needs to be adjusted. In the future I would go with a higher quality product but this worked in the pinch.