TUMBLER ICE MOLDS 20/30/40 OZ What it is A silicone mold set that creates three hollow cylinder ice cubes. The three cubes are designed to fit 40 oz tumblers, with the first and second cubes also suitable for 20 oz and 30 oz tumblers. Compatibility and size 40 oz tumbler cups: all three cubes fit. 20 oz and 30 oz tumbler cups: the first and second ice ring cubes fit. Important: the third ice cube is not compatible with the 20 oz or 30 oz tumblers. Material and safety Made from longlasting silicone. The ice mold is foodgrade, odorless, BPA, and leak. You can freeze with confidence. How to use Pour water into the ice maker, cover, and place it in the freezer. After a few hours, you can enjoy the ice cubes. To release the ice cubes: gently twist the ice mold in the opposite direction to loosen them. Alternatively, you can rinse the ice tray in warm water for a few seconds to release the cubes. Cleaning and storage The ice trays include a lid and bin. Close the lid when putting the silicone ice cube molds in the freezer to effectively prevent odor and dust and keep the ice cubes fresh. After use, rinse by hand or in the dishwasher and let it dry. Why you might want it Flexible threecube set that adapts to multiple tumbler sizes. The lid helps prevent odors and dust, and the silicone material is safe for freezing and easy to release. Use scenarios Scenario 1: You own a 40 oz tumbler and want to use all three cubes to chill water, iced tea, juice, or cola without frequent refreezing. Scenario 2: You use a 20 oz or 30 oz tumbler; use the first and second hollow ring cubes to chill coffee, juice, or cola in those sizes. Scenario 3: You are preparing beverages for a party or travel; the leak silicone design and lid help prevent spills and keep cubes fresh during storage and transport.