BarConic Copper Moscow Mule Mug- 16oz. w/o Logo (4 Pack) 16oz Copper Mug Pack of 4 This replica is 100% copper and is available with or without a Moscow Mule graphic engraved. Built for those that want to experience authenticity, expand their collection, or add decorative accents to their bar. No machine washing. Must hand dry immediately to avoid spotting or patina.