Tired of waiting for others to build his dream machine for him, German engineer Fritz Unger has constructed and tested a prototype jet-powered wingsuit. Other pioneers like, jetman Yves Rossy, have long held media attention for their liberating prone-position manflights, but have no immediate plans to attempt take-off or landing from level ground. If powered wingsuits are ever going to get into the air for sustained flight, what kinds of design might they have?