Silicone Ice Ball Maker Molds Set of 4 Ice Cube Bar Tray Round Ice Spheres 4 X 4.5cm Ball Capacity Safety: HIgh quality silicone ice ball maker trays is food safe and fun to use, and durable, won't crack or break like plastic trays. Easy to Use: The ice mold tray stacks is Easy to fill and clean, Dishwasher safe, does not crack while freezing and won't tip over in the freezer. Widely Used: Perfect for Whiskey, Highball, Cocktail and Hurricane Glasses, Bourbon and Scotch drinks; Iced Coffee for long lasting iced. Use Manual: By adding 3/4 cup of water to the ice tray, your ice balls can be great for whiskey, vodka, martinis, and highballs. Also great for freezing fruits or food inside the ice balls. Size: Large 4 x 4.5 cm (1.78 inch) ball capacity shapes the best ice spheres that are slower melting than traditional ice cubes; It's proven that round ice lasts longer