Food-grade Material for Durability and Flexibility. This hollow ice cube silicone mold is crafted from high-quality food-grade silicone, offering durability, flexibility, and elasticity. This material is safe and non-toxic, ensuring no health concerns during use. Unique Hollow Design for Easy Stacking Enjoy the unique hollow shape of the ice cubes, adding a distinctive charm to your water glasses. The hollow design allows for easy stacking of ice cubes in water glasses, not only enhancing aesthetics but also effectively cooling the beverage. Airtight Detachable Lid for Leak and Dirt Prevention Equipped with an airtight detachable lid, ensuring the ice cubes won't leak during freezing and eliminating dirt concerns. Easily open and close the lid to insert or remove ice cubes. Multiple Size Options for Different Glasses. Specially designed for 20, 30, and 40-ounce water glasses, allowing for the creation of three different sizes of hollow ice cubes. No matter the size of your water glass, you can find the perfect ice cube size to suit your needs. Effortless Ice Cube Removal, No More Hassle Say goodbye to struggling with stubborn ice cubes. Just gently squeeze the lid to effortlessly remove the delicious hollow ice cubes and enjoy your favorite iced beverage. Food grade silicone ice mold tray Ice grid mold love ice making silicone mold Hollow Heart Shape Easy Fill Release Stackable Cubes Cocktails