Mat has dented and remains so. Carpet slightly flattened underneath. Not on the chair all day so not too worried at present. Not sure how durable it will be long term.
I wanted to get a mat that chair casters would not sink into the mat when setting in my chair so the chair would role easily on the Mat. This Mat does not come close it is slightly better than the cheap mat it replaces. Staples rated this Mat for use on one inch Pile Carpet and Pad best available found. It fails to do the job on this pile that is less than an inch. So far the sinking dips do seem to recover in time after the chair is moved. I weigh 250 pounds many men weigh much more. It seems the best you have to offer so decided I will have to live with it at least for now.
It covers the carpet yes but if you sit in one place too long anything around 5 minutes you make divots in the mat. I was looking for something much thicker but I don't think they make them anymore. I kept them because the ones that needed replacing had actual holes in them because they were so old.
The mat is perfect takes to my high pile carpet beautifully. The delivery process from Staples was totally unacceptable. One day service turned into almost two weeks several phone calls from me promises of new delivery dates.
I ordered this for my high pile carpet. I've had it a couple days now and the mat is constantly moving forward towards the desk through normal chair use on it. It also leaves large indented areas into the plastic from the wheels of the chair where if you move the chair it will try to put you back into the indented area the next time you move back to that area. The indents do go away over time but I can't believe this will stand up to regular use and I'm sure my carpets won't be protected. The structures underneath to hold it in place and protect the carpets are only about 1/8 to 1/4 inch deep so your carpets will get pushed down and matted much more easily than one with a pin type bottom or even a thick solid bottom that doesn't indent so much. I am going to return it it is so bad. I'm constantly rolling over these indents.