1. Adorable & Fun Penguin Ice Cubes - Designed wonderfully with the shape of penguin, the ice tray mold makes 4 cute penguin ice cubes at once. Size of ice cube is 2.3 inch. Perfect for garnishing your beverage with frozen penguin ice balls to make a drink you like. Or make it a very cute drink decoration, add to any beverage or party. Bringing more fun to your life. 2. Safe and Reliable Silicone Ice Tray - Our ice cube trays are made of food grade silicone and are BPA . You can use our silicone ice tray molds with confidence. Based on the material of the ice mold, it can accept -40°F to 446°F. Freezer, microwave, oven and dishwasher . 3. Funnel-type Lid, - The funnel is designed to be integrated with the lid, it is convenient for you to fill water without other tools. Also, the transparent lid and water level line allow you to see water level and avoid over-filling. 4. Easy Release, Leak-proof Design - This ice cube mold has 3 snaps, and raised edge grooves between the base and lid to prevent water leakage. Upgraded silicone ice cube trays to make the ice balls easier to release. Please press the snaps and the edge before fill water into the ice tray.