THIS MAT IS USED AT OUR HOME COMPUTER DESK. NEW CARPET WAS INSTALLED IN NOVEMBER SO WE NEEDED A MAT TO PROTECT THE CARPET. I GUESS IN A SENSE IT PROTECTS THE CARPET BUT THERE ARE IN DENTATIONS FROM THE CHAIR IN THE MAT AND IT MAKES IT HARD FOR THE CHAIR TO ROLL ON THE MAT.
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.