Lightning box
€13.36
The magician shows a blue bag and, putting his hand inside it, realizes that it is empty.
The bag is then turned inside out showing that it is red inside, but when turned inside out again, it appears green.
The bag is turned over twice more and appears first yellow and then black.
The black bag has a zipper that the magician opens and finds the object he was looking for inside!
An easy effect and of sure comic-magical impact!