We needed to add a new desk and chair for the office. This mat works very well for our new chair - not too flexible and not too stiff. Static buildup is not excessive.
I have a desk chair with wheels that I don't want to damage the carpet in the room. This mat was the perfect size and covers all of the normal desk usage for a chair.
I am using this mat on my kitchen floor to protect the vinyl tiles from cracking under my rolling chair. It looks good and is protecting the floor. However it will slide if it is kicked.