!! But beware: In the last (air) travel bag with the cooker was screened by airport security. A detector had sniffed out the (empty!) Fuel tank.
I was proclaimed and had to open the bag and show the burner.
The fuel tank has been cashed, the rest I was allowed to keep. As I said, it was empty!
So be careful when traveling by air with this cooker. One should rinse the container before the flight very carefully and then carry in your hand luggage.