This silicone sphere ice mold with built-in funnel makes 2.5 inch slow-melting ice balls for whiskey and cocktails. It is reusable and made of high-quality food-grade material, BPA-free. This spherical ice mold is great for home use, parties, whisky and bars, etc. Easy to use, the unique built-in funnel design enables you to easily fill the water without using an extra funnel. Can be used in the freezer, microwave, and dishwasher. The flexible silicone makes the perfectly formed ice ball pop out easily.