With 5 Locking Buckles: Since the old ice cube mold can't create a full ball shape, we have 5 locking buckles to help you get the perfect ball shape, the material in silicone makes the product more durable. MAKE PERFECT ROUND ICE CREAM BALLSFood grade material to maintain the same temperature on the upper and lower molds of the ice maker, in the freezing layer ( -16), ice cubes can be shaped after freezing for 6 hours. EASY TO USE Just pour about 200ml of liquid and close the lid, completely cover the lid on the product and pressing the 5 latches to overfill the water. Let the water on the floor splash over the spherical model. 100% FOOD SAFE: Large cocktail ice cube trays are made of food grade silicone. BPA free and odorless, safe to use. Heat resistant from -104F to 428F, microwave and dishwasher safe.