Made of food-grade silicone, durable and soft, fast-freeze design and ice cube can easily remove. The silicone material is non-toxic and food-grade. The perfect way to make a boring drink much more fun. Withstand low/high temperature:-40 to 260 Celsius(-40f to 500f) for making party-themed ice cubes, chocolates, gelatine, and more can even be used in the oven or microwave ice cube tray only, other accessories demo in the picture is not included mould size: