Fascinating to watch: Let the giant black airship dance feather-light in the sky - and without any propulsion of its own! Heated by the heat of the sun's rays, the featherweight colossus floats up and down through the air. You simply steer by string.
Easy and fast ready for takeoff: You let the wind drive into the thin skin and tie both ends, the sun does the rest for you. After just a few minutes the air inside has warmed up sufficiently and the solar airship soars into the air!
