The Chair Mat with Lip works really well for now. We had one long time ago but it wore out. However we just purchased a new one until we put our wood floors in. Then we will need to purchase one for the wood floors.
I love this chair. I am a teacher who tends to move around the classroom. I had to make an office in my home for remote teaching. I am sitting in this chair for several hours at a time. It is comfortable and is ergonomic.