Freezing liquids or yogurt isn't advanced math. So it must be a product! Made from ordinary plastic, it doesn't even say what type of plastic it is. I doubt the safety if it is a food product. My experience with it is similar to the review below. The handles break off. The product itself is elegant and is a good concept. The inner mold is again hard plastic, not silicone, and most likely not food safe. US plastics must have numbers that indicate what type they are made of. This is something I regret wasted time disappointed my 8 year old and spent more minutes reviewing it.
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