Old Dutch International Brass Knuckle Hammered Moscow Mule Mug, 20-Ounce, Copper, Set of 4 The mug of choice when serving the Moscow Mule-a refreshing cocktail made from a blend of vodka, ginger beer and lime juice Made of nickel-lined Hammered Solid Copper, with a tarnish-resistant coating for years of lasting shine and no-fuss care Each mug is individually packed in full color gift box for handy gift giving Packaging includes the legend of the Moscow Mule as well as recipe and care instructions Feel free to use it for beer, soda or any other cold beverage!