Rossy developed and built a wing-suit system comprising a backpack equipped with semi-rigid aeroplane-type carbon-fiber wings—with a span of about 2.4 metres (7.9 ft)—powered by four Jet-Cat P200 jet engines modified from large kerosene-fueled model aircraft engines. This has led to him being referred to in the press by various monikers, such as The Airman, Jetman, Rocketman, and Fusionman.