Premium Quality Solid Copper Hammered Moscow Mule Mug - Set Of 4 By Cooklogic 16 oz Hammered Copper Moscow Mule Mug Solid Copper with Brass Handle and Coated with a Tarnish Resistant Lacquer Finish Guaranteed Out of Box Quality! If you are not satisfied with the quality of your Cooklogic Moscow Mule Mug, simply return it within 30 days for a refund. The Cooklogic Hammered Copper Moscow Mule Mug features a dazzling solid copper design with a lustrous nickel interior. Makes the perfect gift! Hand Wash Only and Wipe Dry with Soft Towel After Use.