I bought my play yard from a bulk purchase in another forum. The dimensions of the play yard is about 2m x 1m for a 6 panel one. If I'm not wrong, the largest LG mat should be able to cover the whole area. But your panels will be on the mat rather than on the floor. It should be fine if you form it up to be a rectangle as it's quite sturdy when it's put all together. Mine's on the floor. But the suction is not really good.