THIS IS HEAVY is Jay Mattioli's solution to many of the drawbacks that ALL the other versions of the classic "Light Heavy Chest"  have in some way or another.  

In this version...

THE MAGICIAN NEVER TOUCHES THE BOX DURING THE ROUTINE!
The contents of the box can become heavy, while the magician is nowhere even near the box or spectators, and are always under his complete control.

NO SUCTION DEVICES! 
Most other light heavy chests required you to find a super smooth, glass-like surface to perform on, which made it very impractical. With the supplied props you can do this anywhere, in any environment.

THE PROPS ARE INNOCENT LOOKING!
No giant, suspicious disc to lay on the floor and place the box on. Use a cardboard box which can be viewed inside and out from all angles! There is nothing to see. 

THIS IS HEAVY Is very easy and stress-free to operate, letting you focus on the important part of this classic illusion, the presentation

EFFECT: The performer invites a spectator on stage to help in a demonstration of muscle hypnosis. Seating the spectator on a small wooden stool, the magician "hypnotizes" the spectator into believing that a small silk handkerchief weighs over 1,000 lbs. 

An empty cardboard box is shown on all sides and placed on the wooden stool. A second spectator is now invited on stage and is asked to place the handkerchief in the box and then lift the box with its silk contents off the stool, which proves to be a simple feat. But when the hypnotized spectator attempts to lift the box he can not! It is simply too heavy for him to even budge!

The second spectator can even reach in the box themselves and remove the hanky, which then allows the box to become light enough for the hypnotized spectator to lift off the stool. But whenever the hanky is placed back into box, the hypnotized spectator can not lift the box one bit! This becomes a riot for kid show audiences as well as for adults.

If you have ever wanted to perform Jean Robert-Houdin's Light Heavy Chest with ease, without worry, and with deceptiveness, this is the only reliable version you need!… THIS IS HEAVY!