I've had this office chair mat for awhile now and works well. Definitely wouldn't want to go a smaller in size. One thing to note is the mat is not packaged in anything so when it arrived it was dirty (nothing a quick wipe down won't take care just a little annoying).
While this mat comes in a rather long box and is rolled into an eight inch diameter tube it is now flat. Because of the time of year it had gotten pretty cold during transit and was a little challenging to unroll. Within a couple of hours it was flat. My dying chair rolls easily now! Part of me wishes I could put them end to end in the whole room!
I needed to off-gas the floor mat and weight it down to straighten it from it’s rolled form but it’s worth it. I can move my office chair easily and effortlessly now.
I bought this quick to set up my home office with the work at home mandates. It's so thin that there are now dents from my chair wheels so my chair doesn't move easily. It would be ok for hardwood but not any carpet. I think it will eventually crack where my wheels sit most of the time and need replaced with a heavier one.