Safety Certificate: It is made of silicone. It is naturally harmless, non-toxic, odorless, non-corrosive, and can be recycled. Good performance in high and low temperature resistance: it is -40 to 230 C and can be used in the refrigerator and in the microwave. It is mainly used in bars, restaurants or homes to make ice cubes in the shape of a ball. Ice cubes can be poured directly into whiskey, juice and beer to cool drinks immediately. Good capacity of over 160 ice cubes: It is designed with large capacity to hold more ice cubes. One tray can make 160 1 square centimeter ice cubes at the same time. It saves more than half the time of freezing regular size ice cubes. It can be used directly without having to break it. The tedious steps of the icebreaker are eliminated and your needs will be easily and quickly. Good Flexibility: Silicone is flexible and can be rebuilt immediately after being twisted. The material is environmentally friendly, safe and clean, good for aging and stain resistance. It will not stick with the ice cubes during the icing process, and helps release ice cubes more easily.