This is a decent mat for the price and keep my chair from sinking into the carpet however like others have mentioned the wheels leave indents in the mat. It is bearable and the mat is still usable so it’s not too bad.
This is a good floor mat for the price not great but good enough for our needs. We have it on a low pile carpet. It does indent some where the chairs wheels are but now enough to prevent the chair from moving when we want. I know that other reviewers have had this problem but we haven't.
This mat is apparently only to be used on carpet that is 1/8" thick or less. Our mat was closer to 1/4" thick. From time of purchase till we submitted info for a warranty (less than 3 months) the mat was destroyed with huge cracks everywhere. I do not recommend this mat.