The "Starter Set 2" is a coordinated combination of soft and hard surfaces. The modules with hard surfaces stimulate and strengthen the arch of the foot. The pleasant stimulus activates and strengthens less pronounced muscles. The variety ensures better balance and trains the balance for the little ones. The "Basic Set 2" contains mini modules, the four mini modules put together correspond in size to a large module. They can be attached to the larger modules individually or in any combination.