A bit expensive but well worth the money. You can show inside the top before and after and hand the container to the spectator to open and there is nothing to see. Totally fools the them.. I carry it all the time..

Kreis magic is a brand that you can trust.
Easy to do. Great reactions! I love it!
Yo can't go wrong with this.

well I was kind of disappointed with the item, I expected better quality from KREIS magic.

The LID is not examinable, (brief visual flashes only). Any close up inspection would tip the method. The instruction link was average, straight to the point written instructions.

I would gladly pay a higher price for an EXAMINABLE item.

They should have spent a little longer in the testing phase as it does NOT work perfect 100% of the time.

Not sure why anyone would carry around a jar. I would suggest a large tic tac box would make more sense.