I have just recarpeted the office with a fairly low pile carpet and standard padding. Approx ½" deep overall. In order to protect the carpet from my office chair I purchased this chair mat. After unrolling it it took about 2 days to flatten out and gave off a lot of fumes. Overnight my 5 legged office chair makes 5 shallow dents in the mat. When I sit in the chair for a while the mat developes fairly deep dents that require effort to roll out of. I weigh 230#. I feel that a mat that is this expensive should not be this weak.
Could be made of thicker material. The desk chair leaves dents in the mat that can be difficult to roll out of. This is the second one of these I've purchased and expect it to last a couple of years before it cracks and becomes unusable. It took me about an hour to clean the mat with some adhesive remover because the packing tape that's used for shipping was difficult to remove.
I just put in down Saturday and it already has very large indentions where the casters roll. I do not think that should happen that fast. Yes it was a cheaper one and I should have gotten the better one for a deeper pile for the carpet. I did not think our carpet was that thick but I guess it may be. I will certainly take a good look at the next one I buy and it will be the better one. Wish I could exchange it but I do not know if the store will take it back. I am not sure but I think I have my receipt.