The conjuror or his assistant sits and puts on the helmet and from this moment the magic begins. The helmet and person's head, which is visible, is rotated 360° various times. At the end of this demonstration the assistant stands, the conjuror blocks the helmet on the head with his hands and, this time, it is the body that turns to its initial position.
You are probably familiar with the "Head Twister" act. This can be presented to the audience in a serious or comic way, however, it has always been done with obsolete objects such as boxes with knobs, boxes with oriental designs, sequins, and so on. Paolo thought to use a modern object: a motor-cycle helmet! It is a common object of everyday use!