Unused FROZEN CUBE Double-Walled Tumbler & Cube 2P Tumbler ◆ Double-walled construction prevents heat transfer to the outside, making it comfortable to hold. ◆ Keeps the temperature of your drink for a long time. ◆ The fine finish on the inside creates a creamy head when pouring beer, making your beer taste delicious. Stainless Steel Cubes ◆ Can be chilled in the refrigerator and used as a substitute for ice. ◆ Unlike regular ice, it doesn't melt and dilute your drink. ◆ Can be used repeatedly. *Please comment if you have any other questions.