Gymstick floor protection mat set (4 pieces) Multi-purpose locking mat set. The mat is 1 cm thick, firm and durable and therefore offers good protection against the floor. You can use the mat as a training platform, fitness tool platform or as a platform for dumbbells. The matt set consists of four 60 x 60 cm parts, which you can combine at will. You can also buy several sets and protect a larger area.