1. Cools Quickly & Melts Slowly: 6cm large round ice cube mold not only cools drinks quickly, but also melts and dilutes more slowly. Thus providing you with a long-lasting refreshing drink.2. Flexible & Effortless Release: The circular ice cube mold is made of PET and PP plastic for easier release of ice balls. After taking the ice trays out of the refrigerator, wait 8 minutes or rinse with water, then twist the ice tray slightly, the ice balls will be released soon.3. Compact & Stackable: Whiskey ice mold is compact in design and won't leak. Ice ball maker can be stacked to save space in the refrigerator. Great ice maker for home, parties, restaurants, holiday and bars etc.4. Easy to Use: To get the great round ice balls, fill the ice tray over the sink, then close the lid and squeeze out the excess water, put in refrigerator.5. Satisfy Multiples: The sphere ice molds are suitable for whiskey, cocktails, bourbon, vodka, smoothie, juices, or other mixed drinks. You can also fill fruits, jelly, baby food, coffee, vegetable puree, yogurt and chocolate into molds.