BPA free and food safe silicone.- Easy to clean/use/fill/release.- The non-stick design makes it easier to use.- Stackable and saves space in the fridge.- Can be washed in the dishwasher/freezer/microwave oven. Flexible Non-Stick Ice Cube Mold: This ice tray mold has 37 compartments, the non-stick silicone can release the ice easily, the silicone ice cube tray will not crack or crack like hard plastic ice cube tray,just place the ice tray Turn over and release the ice cubes easily by pulling them from the bottom of the ice cube tray. FUN DESIGN: Stackable ice cube container with lid, the ice cubes are honeycomb shaped, more fun to eat.It comes with an extra lid that stacks to prevent odors, dust and sticking, keeps the ice cubes clean and prevents the absorption of odors from the refrigerator. Convenient ice maker: fill it with water, soda, juice, wine, fruit, herbs, sauces, puddings, baby purees or other melted foods and put it in the freezer.The flexible silicone tray allows the ice to come out easily, it is easy to clean and can be washed in the dishwasher. Food Grade Silicone Ice Cube Tray: FDA compliant and BPA free food grade silicone ice cube tray, heat resistant silicone mold.Temperature resistance: -40--240 .Safe for refrigerator, oven, dishwasher, freezer and microwave oven.