Hourglass (Lebedev Edition) by Antony Lebedev - Trick

You hold in your hands a unique trick, which is available only in Russia!
The effect of the trick is that the perpetrator of this trick at any time can stop the sand that falls out in the hourglass.
The size of the hourglass was specially selected in such a way that it fits loosely into the inner side pocket of a magician! And when showing other tricks, it will not disturb you!

"I love this Clean and Fantabulous concept, It's Real magic to fool people."
- Taiwan Ben