PET bottle holder that keeps gravity balance not to collapse so as to collapse

A movie of a holder that seems to be just a hole in a cardboard board and keeps a plastic bottle firmly. Basically it just seems to collapse as it just plugs a plastic bottle into a holey plate, but seems to be solid with an exquisite balance.

Details are as below.
The whitish one on the desk is the holder.
YouTube - Make A Crazy Gravity Soda Holda!

How to use just plug in a plastic bottle.

It will not collapse even if you rotate by hand.

Even if the scaffold is narrow, there is no problem.

It also becomes an interior.

Once the contents are drunk, the balance seems to have changed, but it is an interesting item as party goods.

in Note,   Video, Posted by darkhorse_log