Southern Homewares Copper Mug for Moscow Mules - 12-Ounce Copper-Clad Stainless Novelty Cup - Set of 4 Copper Moscow mule mug with stainless steel lining Holds 12 oz, 3.5" High x 3" wide (not including the handle) Stainless lining and exterior lacquer coating over copper for protection and durability Food safe seamless hygienic interior Dishwasher safe - not microwave safe