office chair location is on a carpeted floor. the carpeted floor needed protection from the wheels and weight of my new office chair. this mat stays in place in the carpet and does exactly what it was meant to do. protects the carpet and makes the moving of the chair easy and smooth.
As others noted the mat is not very thick. Its better than no mat but if I wanted it to last for years I would ahead & spend more. We are changing flooring in 9 months so I will invest in different mat then.
I reviewed the measurements before purchasing and it seemed to be adequate. However once I laid it down I realized that it is really too small for normal movement around a decent sized desk.