Preferred Materials: The silicone ice cube tray is made of environmentally friendly food grade silicone material, high and low temperature resistant, not easily deformed, non-toxic and odorless, can be in direct contact with food, adults, children and babies can use it without any problem. Easy to Pop OutOur long ice cube tray is made of flexible and durable silicone that can be popped out without deforming and will not harden when placed in the refrigerator, you can easily remove the ice from the mold, lightly press the bottom and the ice will fall out immediately. Easy to Clean: Our large ice cube mold is also very convenient to clean, after use, you can simply place the ice cube tray in the dishwasher to clean it, or rinse with water and dry with a paper towel for reuse without maintenance.