The package includes 2 stable silicone balls that are in the middle to open. On the top you have a hole to fill with water, the bottom is flattened to be able to put them in the freezer.
Filling goes without any major problems, we must not forget, however, the water expands upon freezing and thus leak water up again would when making the balls full to the brim. So security Halbe I pour always a little water from the ball out after filling and put the 2 balls then the safe side even in a ziplock bag to freeze.
The next evening, the balls are then ready for use and can be used equally. The ice ball can be easily released with warm water from the silicone mold after a short quenching. The smell and taste test was satisfactory Neutral. An ice ball stops in about 2 hours depending on how many times you nachschenkt warm liquid and how warm the nachgeschenkte liquid.
All in all I'm very happy with the ice ball maker. The only thing you have to remember is that the glass must be wide enough to accommodate the ice ball.