IGR - Institut für Gesundheit und Ergonomie - hat den CrazyChair ONE Hängesessel zertifiziert.

The CrazyChair ONE was licensed with the IGR certificate after careful examination. It was awarded by the "Institut für Gesundheit und Ergonomie e. V.". This is a strong network of physicians, physiotherapists, scientists, employees of the company health management, representatives of authorities and product developers, who deal with health and ergonomics.