While this seems to be a reasonably good quality mat it is not nearly that good in use. The mat is advertised as a "Berber Mat". Berber is a stiff somewhat coarse loop carpet . This mat has NO GRIPPERS on the underside? I was concerned about that from the minute I saw it but decided to try it anyway. It took me less than 1 day to decide to return it because it was constantly moving around on the carpet and had twice moved so far that it was bent up against the desk. I packed the mat up and took it to my Local Staples to return it. Like usual they gave me the run-around but eventually took it back. I'll never again buy something like this by mail. Who evaluates these things?
i recently bought a new house with all new carpet and was concerned that my swivel chair wheels would mess up the carpet or leave dents in it. my previous home had a big circle in the carpet under the chair so i didn't want that to happen. i ended up purchasing this and it seems to be working just fine.