Chung -Shi Men's Comfort Magic Step Sport Trainer The revolutionary AuBioMo-system is available in 2 versions: Balance Step and Comfort Step. The balance step is a more fitness-oriented shoes with much focus on stimulation of the balance ability, muscles toning, constructive effects to the foot architecture and improvement of the blood circulation. The comfort step has the same benefits as the balance step, but to a lower degree. The comfort step is focusing on the comfort, fast adaptation - about 2-3 days for most users - and for long wearing. The angle in the heel and in the toe part is 20 degrees at the Balance Step and 15 degrees at the Comfort Step. The shore stiffness as well as the sole angle is affecting the unrolling resistance. At the Balance Step it is more intensive than at the Comfort Step. For cushion reasons as well as an increased wearing comfort, the shore stiffness of the mid sole has been reduced 5% at the Comfort Step compared to the Balance step.