MechanoTherapy - kyBoot


kybun MechanoTherapy

kybun MechanoTherapy

Karl MullerIn the 1980s, Karl Müller of Switzerland discovered the health-enhancing benefits of walking on soft, supple clay soil while living among the paddy fields in Korea. To recreate this paddy-field feeling in everyday modern life, the engineer developed a shoe with a round sole ('MBT'). This wobbly sole was diametrically opposed to the shoe industry's basic principle of 'supporting, guiding, absorbing' and drew fierce criticism from science, medicine, and the shoe industry.


Click here to read more about Karl

From the rolling shoe to 'walk on air'

Thanks to its predominantly positive effect on the body, the round, wobbly sole became a worldwide success; more than 10 million pairs have been sold to this day. It turned thinking in the shoe industry upside-down and has now been copied by more than 100 companies (Skechers, etc) . 

But Karl Müller wanted more. He envisioned working on that perfect paddy-field feeling to make it part of everyday modern life, both when standing and walking; he believes the therapeutic effect is all the better the more perfectly the soft, supple feel of the paddy field is recreated for your feet. Consequently, he sold his share in MBT in 2006 and started right from scratch again with kybun.

The feel of soft, supple soil

The kybun MechanoTherapie, as developed by Karl Müller, is an empirical science which takes these facts into account and develops products that allow people to experience the wonderful feeling and benefits of soft, supple natural soil in everyday modern life. After years of research and development, Müller and his team managed to recreate the paddy-field feeling perfectly.

Standing on the soft, supple, springy surface of the kyBounder and walking on the air-cushioned sole of the kyBoot:

✔ exercises your feet
✔ keeps your body upright
✔ relaxes your muscles
✔ is kind on your joints
✔ relieves pressure on your veins

With the kyBoot, kyBounder and kyTrainer – a unique treadmill with a soft running belt – you can walk actively, automatically exercising the muscles of your feet and legs. The soft, supple material gives your feet full freedom of movement and strengthens them without tiring them out.

Read more about the benefits of kyBoot here

kyBoot Sizing and Fit

To get a size recommendation, look for this button next to the photo of the shoe:





About kyBoot Width:

All kyBoot shoes are generally wide (4E). However, there is variance among the models due to 2 factors: 

  1. Sole Type - affects the shape of the shoe
  2. Upper material - affects the lateral flexibility

We therefore make recommendations for each model based on foot shape. If there are any special recommendations - they will be included in the product description.

Special Recommendations:

For the Comfort Sole, Training Sole and Sandal Sole:

  1. Order the same size as the charts below indicate.
  2. Take note if there are any recommendations for the model you chose, and if so follow them. Not all models fit equally.

For the Slimfit Sole:

  1. If your feet are narrow keep the chart size
  2. If you have a wide midfoot order one half size up (e.g. from 8.5 to 9)
  3. If you have a wide forefoot order a full size up (e.g. from 8.5 to 9.5)


Not sure about the size or model? No problem! We'll be happy to advise on the perfect fit at We also have a free returns policy - so rest assured we are here to help you find the ideal kyboot for your feet. Click here to contact us.

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