This unique 6-grid skull-shaped ice cube tray is made of safe food-grade silicone material, which makes it reassuring to use in the kitchen. It is suitable for use in the refrigerator, microwave oven, or dishwasher. Thanks to the flexibility and durability of the silicone, it is easy to release the ice cubes, and it won't crack or break easily like other plastic ice cube trays. Both the lid and the base are made of flexible and durable silicone, providing an excellent sealing effect. They fit closely together, and the 4-fixed cylindrical buckles ensure that the liquid freezes into a perfect skull shape, allowing your iced whiskey or cocktail to stay cool for a long time. Its novel and interesting design can instantly make your beverages look incredibly cool. Whether it's a festival party like Halloween or Christmas, or an ordinary gathering, it can add a joyful atmosphere to the event and take the party to a new level. It is also very easy to use. The ice cube tray is equipped with a small white funnel, which makes it convenient for you to pour water, whiskey, cocktails, or other beverages into the tray. Put on the lid, pour water with the funnel, place the ice molds in the refrigerator to freeze, and then you can release the ice cubes with a gentle push. In addition, its functions are not limited to making ice cubes. It can also be used to make other foods such as ice cream, chocolate, cakes, bread, etc.