Effect: A red silk handkerchief is tucked into one end of the Crystal Tube followed by a green silk and then a yellow one. Each silk is completely separate from each other. You raise the tube to your mouth and blow through the tube. Amazingly, the silks fly out into the air all knotted together!
The beauty of this effect is that the audience never loses sight of the silks through the transparent tube.
The method is simple yet quite ingenious!
Complete with tube, silks, and instructions.