The kybun shoe at the Tennis European Championships

Hansruedi Widmer is the Swiss Senior Tennis Champion. For several years now, the 70-year-old has been plagued by discomfort in his knees due to tears in the meniscus.

However, once the retired maths teacher started wearing kybun shoes during training, the pain disappeared. Hansruedi Widmer flew with his team mates to the European Tennis Championships in Spain in September. He brought his Swiss air-cushion shoe from kybun with him.