1. The ice cube tray is made of silicone material: BPA-Free and Premium plastic, durable and soft. Food grade, non-toxic, tasteless, no harmful substances. 2. The soft rubber bottom is matched with the pressing nail plate to help you remove ice cubes easily and quickly. Just close the lid and press lightly to release the mold quickly. 3. Many-layer ice tray design, allows you to easily make large-capacity ice and store ice in summer. not only an ice-making box but also an ice-storage box, which can be used for multiple purposes.