Moscow Mule 100 % Solid Pure Copper Unlined Mug /Cup (16-Ounce/Set of 4, Premium Diamond Hammered) by QUBIC INC FEEL LIKE A KING OR QUEEN WITH THIS MUG IN YOUR HAND... This eye-catching, 16 ounce, authentic Moscow Mule mug is 100% solid copper throughout, not stainless steel or nickel. Our Moscow Mule copper cups feature a beautifully hammered finish with a tarnish resistant, food-safe lacquer coating both on the inside and outside of the mug to protect its natural beauty and luster for years to come. AUTHENTIC MOSCOW MULES - This Mug is NOT an Imitation Copper Plated Mug, nor is it Lined with Tin, Nickel, Steel, or Food Lacquer Inner Coatings; This Ensures the Appropriate Citric Acid to Copper Reaction for which Moscow Mules are Known; Because of This, the Mug WILL Tarnish; This is Normal for an Authentic Copper Moscow Mule Mug. Unique style and superior quality, our unlined mugs are beautiful and externally lacquered to last a long time Moscow Mules enhance the individual flavors of the ginger beer, vodka, and lime. Some experts say that when vodka touches the walls of the mug, the copper begins to oxidize, slightly boosting the aroma, and enhancing the taste of the vodka. Cold copper also has a tendency to increase the amount of bubbles in the carbonated ginger beer, bringing maximum fizziness to the Moscow Mule, when compared to being served in a plastic or glass container. ICE COLD--Our copper mug will frost up in mere seconds. The pure copper transmits an icy cold experience directly to your lips, and the metal locks in the drink's coolness. The included copper shot glass makes measuring drinks a breeze, and the mug serves up a refreshing experience for any type of cocktail! and Frequently used both at homes and at bars