Imagine this: A rubber band is held stretched between the left index fingertip and thumb. Another rubber band, dangling from the right fingertip, is lowered behind this first rubber band. The right thumb is now inserted into the lower part of the loop, effectively locking the bands together. If the hands were to move away from each other, one of the rubber bands would have to fall off, of course. But as you move your hands apart, the rubber bands seem to visibly penetrate each other. An unbelievable close-up miracle! With the secret instructions and rubber bands enclosed, you’ll be performing this classic effect in no time!