this is a very good smaller mat that I was looking for..it was on sale 50% off..who couldn't make that work? On carpet it gives some protection but still works down although not anywhere near working into carpet that is unprotected. It all bounces back after you get up anyway.
We're very pleased with the mats they are working well on our new carpeting protecting it from the office style chairs we have. My only wish is that they were a little bigger but they are much nicer than one we had years ago.
Time will tell. My chair rollers leave impressions in the pad. Previous pad had same problem & eventually cracked. If this happens again I might have to buy a pad so thick that it cannot be supplied in a roll or folded up.