1. The ice cube tray is made of silicone material: durable and soft. Food grade, non-toxic, tasteless, no harmful substances. 2. Fill the ice tray with water and put it in the refrigerator to freeze for a few hours. Then take it out. Press lightly to quickly release the ice and release the mold easily. 3. Large-capacity design, not only an ice-making box, but also an ice-storage box, which can be used for multiple purposes.