Switzerland is famous worldwide for its mountains, outdoor sports and multifunctional tools. In the meantime, almost every recreational activity comes with its own matching penknife. Renato Rüfenacht has preoccupied himself with the development of a new multifunctional tool for paragliding. The tool is designed to enable the pilot to replace a defective cord even on the mountainside, thus avoiding any unnecessary risks, for instance by flying with a frayed cord. The development involved adopting current design-theory approaches.