Kybun was developed in direct opposition to the prevailing theories of healthy footwear. The theory of healthy footwear for at least the past hundred years has been for the shoe, and possibly along with an additional arch support, was to help hold the foot in the proper alignment when walking or running. This was because our bodies were not meant to live in a world of flat hard surfaces where the stresses on our feet were almost always the same. This caused the muscles in our feet to break down and become weak, so we need the support to stabilize them. Feet without the extra support cause strain on the entire body because of their misalignment. Think of needing a cast on a broken bone. There are two major problems with that, first you would not want to wear a cast for the rest of your life. Second wearing the support will not allow the muscles to become stronger and it may cause them to become weaker.
Kybun was developed using the theory that instead of stabilizing the muscles in our feet we need to mobilize the muscles in our feet. Karl Mueller (the Swiss Engineer that invented kybun) discovered while living in Korea as a young man that walking on the rice patty, which was soft and springy, relieved the pain on his back and knees. He recreated that feeling by inventing first the rocker bottom MBT shoes which then transformed into the kybun brand.
Wearing kybun allows the feet to move naturally with a rolling motion which is not only more efficient but also helps strengthen the muscles in the feet and body. You feel your posture improve and you muscles begin to relax. The impact on your joints is much