BarWerks Hammered Finish "Moscow Mule" 100% Copper Mugs with Solid Brass Handle 16oz No plating, stainless steel or nickel lining. High quality "hammer finish" Moscow Mule mugs with a solid Brass Handle. These mugs are constructed of 100% pure Copper. No plating, stainless steel or nickel linings. Generous brass handle is welded to the mug. No rivets to violate the integrity of the vessel. Welds are clean and high quality. Only the best mugs pass quality assurance. Solid copper is great for light beer, iced tea and coffee, whiskey, rum, and other mixed drinks. BarWare quality for a lifetime of use. We guarantee our mugs! All copper construction makes for a quick frosting mug. Leave them in your freezer case. Hand Wash Recommended.