Large Ice Cube Moulds: Silicone Sphere Ice Cube Moulds Create 2.5-Inch Large Melting Ice Balls for Whiskey. Melting Slower and Cooling Your Drinks Longer. Simple Non-Stick Design: Our Ice Ball Maker Are Made of Durable Silicone. Can Be Easily Twisted or Pushed From The Bottom of The Whiskey Ice Moulds To Take Out The Ice Balls for Easy Release. Food Grade Material: Round Ice Cube Moulds Are Bpa-Free Black Silicone Ice Sphere Moulds. Which Are 100% Safe and Effective In Freezing Liquids Such As Juice. Soup. Baby Food. Etc. Built-In Funnel Design: Ice Sphere Maker Unique Built-In Funnel Design Enables You To Easily Fill The Water Without Using An Extra Funnel. Better Yet. Each Ice Cube Moulds for Whiskey Is Easy To Clean Off Quickly and Theyre Dishwasher Safe. Precautions: Please Remember To The Whiskey Ice Ball Maker The First Time You Use Them To Wash In Hot Water Before. and Dry Thoroughly After Use Ball Ice Cube Moulds.