The ingenious Airship is a huge eight metre long sleeve made from a thin black plastic film (like the stuff bin liners are made of) & is simply filled with air when you are ready to fly. To describe the Airship as solar powered is technically true although perhaps a bit misleading. There are no solar panels but it presumably works by absorbing heat from the sun through the black skin, heating the air inside which makes the Airship rise. It is incredible to have something so big hovering up to 50 metres above you, & even possibly slightly unnerving, but as it weighs next to nothing it is completely harmless. Easily repairable if damaged, & re-useable. Excellent entertainment value. Does not require Helium!