The Moscow Mule is a classic cocktail usually served in a copper mug that has been refreshing tastebuds since the 1940's. That famous blend of vodka, ginger beer, and lime juice can be enjoyed, especially so, with OUR Hammered Unlined Moscow Mule Mug. Featuring an attractive hammered finish to please the eye, it is also made of Solid Copper, which not only keeps your drink cool, but brings out the flavors of your mule recipe. For the purists, this mug is unlined and unlaquered, leaving nothing between you and your copper vessel. Designed to keep drinks colder Our Hammered Moscow Mule is not intended for dish washer use. Doing so will cause product discoloration. Hand wash with warm soapy water, and dry thoroughly with a dry cloth. This product is not microwave safe. PURE COPPER - No nickel, tin, or other metals on copper mugs! Only pure copper to give your moscow mule the right taste. PERFECT SIZE - 16 oz. size just like the original copper Moscow mule mug.