Thought for the few hours I sat in my chair this mat would work. My desk is on low pile carpet but the mat still gets grooves making it hard to roll the chair. Will use it till it's not use able then get the correct one for the carpet!
We have had our chair mat for less than two weeks and already there are indentations in the mat where the chair sits at our computer site. Because of it the chair barely rolls and it involves getting up and physically moving the chair over these intents when getting closer to the computer is necessary. It has been a huge disappointment.