Slow-Melting for Lasting Refreshment: Unique hollow cylinder ice cube shape is designed to melt slowly, ensuring that your beverages stay cold and undiluted. Say goodbye to watered-down drinks and enjoy the original taste and quality of your favorite beverages Versatile and Stackable: The cylinder shape of ice cubes allows them to be stacked, making them compatible with STANLEY cups 30 40 oz. The ice cube tray can also be used individually in drinks, coffee, or cocktail glasses, adding a cool twist to your beverage experience Sealed Removable Lid: No more leaks or messy fridges The sealed lid on this ice cube tray keeps everything locked in, ensuring pure ice without any contamination. Enjoy flavorful drinks and keep your fridge clean Premium Food Grade Silicone: The ice cube tray molds are made of food grade silicone that is BPA free, flexible, and elastic. It is also easy to clean and can be recycled, making it a sustainable choice for your summer drinks Easy to Use: The flexible silicone ice cube mold makes it effortless to remove the ice cubes. Simply peel off the outer mold and squeeze the cap to release your fresh ice. It's super durable, unlike flimsy plastic trays, and guarantees a hassle-free experience