Landing mats are the most popular landing surface for schools and bouldering walls. With this type of mat, when the wall is not in use, the mats simply fold up and the mats are locked down with a closure system, thereby limiting access to the wall.
Although there is no climbing industry standard that specifically dictates the thickness or dimensions of a landing surface mat, Nicros recommends the landing surface cover a minimum of eight feet from the base of the wall and that it be suitably thick to protect a climber's fall.