On stage is a big, transparent box, which is shown to the audience from all sides. Everyone can see that the box is empty. Cover the box for a few seconds with a big silk. When the silk is removed from the box, your assistant is seen inside! This startling appearance is over in a flash, your assistant materializes in the box, as it were. 'Crystal Box' is an ideal way to introduce your assistant and can be presented anywhere. The cubicle measures: 110 x 60 x 70 cm. The stand (on castors) measures: 1 m x 1. 5 m. 'Crystal Box' can be completely dismantled. The transparent side-compartments are made of reinforced Perspex