About This LONG-LASTING CHILL: Creates 2.5-inch spherical ice for chilling and garnishing bourbon, whiskey, water, iced tea and other refreshments; uniform balls of ice melt slowly and evenly, keeping drinks colder longer with less dilution FLEXIBLE SILICONE CONSTRUCTION: Silicone mold inverts to easily remove the ice ball without having to rinse under water; creates a perfect sphere that fits snugly in standard whiskey glasses SIMPLE TO OPEN: Once frozen, simply pull the halves apart, flip over the mold, and push on the bottom of the mold to pop the Ice Ball right into your glass STACKABLE SPACE-SAVING DESIGN: Store the 2 units in your freezer or display with your other bar items and save space in your kitchen or dining area WHAT'S INCLUDED: Comes with 2 units that each make a 2-1/2" diameter ice sphere; dishwasher safe; designed in the USA Overview Material : Silicone Color : Black Brand : ZOKU Shape : Round Item Weight : 0.1 Kilograms