Food-Grade Material - These ice cube trays with lids are made of food grade silicone and plastic, assuring the drink/food made by these ice cube trays are durable and reusable.(Simply let stand for 1 minute, or rinse the bottom silicone with water to remove the ice cubes faster. Never use brute force to take ice, which will cause the silicone ice cube tray cracked.) Making 42 Cubes at One Time - Each ice tray with lid makes 21 nice-sized cubes for a total of 42. Each ice cube has a narrow dome shape with a diameter of 30 mm and a height of 20 mm. This small size allows it to fit into most water bottles, and freeze quickly. Easy-Release - Simply press onto the silicone bottom of the ice cube trays to release ice into your glass. There is no need to have a bin full of ice, each cube separates individually, allowing you to fill up a glass one cube at a time. Removable lid keeps your ice tray clean. Allows you stack the ice trays stackable and save space. Wide Variety of Uses - These ice cube trays with lids are not only used to chill drinks, also used to make all kinds of summer delicacies, such as popsicles, puddings, fruit jellies, chocolates and cakes, great silicone ice cube tray for all people. Ozera ice tray with lid is great for home use, parties and bars etc. Specifications: Material: Silicone & Plastic Color: Blue & Green Ice Cubes: 21/piece * 2 Pack Ice Tray Size: 10.4'' x 4.7'' x 1'' (26.5 x 12 x 2.6 cm) Ice Cube Size: 1.18'' x 0.78'' (3 x 2 cm) Features: * Food grade silicone and plastic, ensures the drink/food safety for you. * The silicone material shapes the bottom well, can very easy to release the ice cubes.