Feature: Mikasa Moscow Mule 16 Ounce Copper Barrel Mug With Brass Handle Plain. This Mikasa Solid Copper Mug is both decorative and functional. Made of copper with a nickel lining, this cup features an attractive brass handle. It's the perfect size for cold beverages. Holds 16 ounces. Hand-wash with warm water and a mild detergent; rinse and dry immediately. Made of copper and brass.