My desk chair was leaving indentations in my carpet. Therefore I needed the mat to protect my carpet. It does serve the purpose although I would have preferred one a bit thicker. This mat does the purpose but it also is not thick enough to prevent indentation in the mat itself. One just a bit thicker would prevent any indentations. The indentations cause it to be harder to move the desk chair.
It works for what it was made. I am placed it on my carpet to make my home office chair roll with ease. Before I had the mat rolling the chair to sit at the desk was hard now I can push away from the desk to stand up or sit and roll the chair back closer to the desk to work. Adjustment were necessary since I am working at lot more from home than before.