The OXO Good Grips Silicone Ice Tray is a kitchen essential for making uniform, fresh, and easy to remove ice cubes. The Tray itself is made of flexible silicone, making it a cinch to remove cubes. It is supported by a plastic base, which supports the tray during filling, transport to the freezer, and storage. The cover also protects the ice from absorbing unwanted freezer odors and allows multiple trays to be stacked on top of one another. These handy trays are available in multiple sizes to create large cubes, small cocktail cubes, and festive X and O-shaped cubes! Flexible Silicone Ice Tray makes uniform, easy-to-remove ice cubes Base supports silicone tray during filling, transport and storage Cover helps keep ice from absorbing freezer odors and allows for stacking multiple trays Contains two separate trays that make 48 small cubes that are perfect for cocktails To release cubes, hold silicone tray upside down and twist, pushing on each cube from the bottom of the tray Dishwasher safe