Siggi&oacute; Hammered Mugs - Nickel Lined - Solid Copper Moscow Mule - Set of 4 Mugs - 16 Oz Capacity - 100% Pure Copper Barware - Novelty Copper Drinkware Cups for Mules, Beer, Camping, Water - Authentic Moscow Mule Mugs with Nickel Lining or Lacquer Finish and Lifetime Guarantee Hammered Moscow Mule Solid Copper Mug / Cup, 16 Ounce, Set of 4