[Revolutionary Design] - Our silicone ice-cube tray with a lid is specially designed for 20-40 oz tumblers, allowing you to create 1-3 hollow cylinder ice-cubes per mold. Make different sizes of ice-cubes based on your glass size for the perfect fit. [Fresh Flavor Guarantee] - The tight-fitting and removable lid ensures your ice-cubes maintain their pure and fresh flavor, avoiding dilution and contamination in the refrigerator. [Longer Cooling Effect] - Our unique hollow cylinder design creates larger ice-cubes with a smaller contact surface, reducing the melting speed and prolonging the cooling effect of your beverages. [High-Quality and Safe] - Made from premium silicone, our ice-cube tray is odorless, non-toxic, and safe for repeated use. It is flexible, durable, and easy to release ice-cubes without cracking or breaking. It is also dishwasher safe for effortless cleaning. [Versatile and Convenient] - Compatible with 20-40 oz tumblers and mugs, this ice-cube tray is perfect for chilling drinks, making ice for cocktails, whiskey, beverages, and coffee. It adds convenience and enjoyment to your drinks, making them more enjoyable. Colour:D:Blue Material:Silica gel Package Contents: 1 * Ice-Cube Tray Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.