100% Solid Copper Moscow Mule Mugs- 16 Oz- Hammered or Smooth Style- Moscow and Kentucky Mule Cups and Recipe (Hammered Style) 16 oz 100% Solid Copper Moscow Mule Mug Branded packaging with Kentucky & Moscow Mule recipe card. Our authentic copper cups have vintage and antique feel. Quality pure copper instead stainless steel or nickel lining. Our copper mugs have no rivets! Handle is welded for a tasteful finish that prevents leaks unlike riveted handles. Satisfaction Guaranteed! No hassle returns!