silicone construction: Our large ice ball mould is made from foodgrade silicone that is BPA, creating pure and safe ice spheres for all your beverages. Stackable and spacesaving: The moulds are designed to be neatly stacked in your freezer, maximizing storage capacity and keeping your ice organized. Easy release: Flexible silicone allows effortless removal of formed ice spheres with a simple twist, reducing mess and effort. for drinks: Produces round ice balls that melt slowly, ideal for whiskey, cocktails, and other beverages requiring minimal dilution. Practical use scenarios Whiskey and bourbon on the rocks: Slowmelting ice balls help preserve flavor and chill without watering down your drink too quickly. Craft cocktails and mixed drinks: Use for martinis, old fashioneds, and other cocktails where controlled dilution and a clean presentation matter. Nonalcoholic beverages: Keep iced tea, juice, or soft drinks cold longer without rapid dilution, enhancing flavor and enjoyment.