would never recommend chair does not glide over as the plastic is too thin and the rollers on the chair still dig into the carpet under the plastic. I give it a big zero "0000" no stars the only reason it got 1 star is because the system does not allow me to give it a zero rating.
While the mat fits well into my desk space I can't quite understand why it won't stay in place. It's as if this mat has a mind of its own and likes to crawl along the floor beveling and buckling along the way. I will have to find a better way to keep it locked in place on the floor but for now it's simply satisfactory; nothing special to write home about so to speak.