Mule Me! Copper Mugs, Set of 2, 16 Ounce &#x2605; Set of 2, 16 oz. Pure Copper Straight Mugs by Mule Me! &#x2605; Unlined with nickel or stainless steel these copper mugs for Moscow Mules or other drinks keep them ice cold. &#x2605; These mugs are 100% copper and lacquered on the outside to prevent tarnishing. &#x2605; Custom box with Moscow Mule recipe and Mule history makes the perfect gift. &#x2605; Our mugs meet the FDA approved standard for food safety and we offer a 30 day, 100% money back guarantee. Each mug is handcrafted using high quality manufacturing.