Tr.Out Moscow Mule Copper Mugs Set of 2 - 16 oz Cups Solid Copper with NO inner stainless steel lining maintaining the true history of a Moscow Mule Copper Mug. Make sure to hand wash only and DO NOT put in the dishwasher or microwave. These are perfect for Moscow Mules but can be used for many different kinds of cocktails or drinks. Copper Cups will definitely keep your beverage cold and tasteful! 100% Money Back Guarantee and Satisfaction