NON-STICK FOR EASY ICE RELEASE: Features ultra smooth surface and non-stick performance, the ice maker trays allow for easy removal of ice cubes or ice balls, a gentle twist or push from the bottom to remove ice cubes and balls can help you take out ice to enhance flavor of your drinks. . REMOVABLE LIDS: Every silicone mold comes with a lid made from top-quality material, the lids designed with fine sealing system can well match with the opening of the molds for perfect sealing to avoid mixing with scent of other food in refrigerator and affecting the taste of ice cubes. . EASY TO USE DISH WASHER SAFE: Each sphere mold has 4 cavities and the square mold has 6 cavities, clean the ice mold before use and add appropriate pure water or fruit juice then cover the lid and put in refrigerator. Yes they are stackable and space-saving to keep your fridge clean and tidy. Also its easy to clean and dishwasher safe. . DIY FAVORITE DRINKS: Comes with 2 sphere trays and 1 large square tray to meet needs of using multiple ice cubes simultaneously. It allows you to add water, juice, milk, yogurt and more to customize your favorite flavor, ideal for cool whiskey, cocktail, coffee, beer, lemonade, Mojito, liqueur, tea or popsicles, suitable for home, party and bars .