STREET CRAFT Set of-4, Hammered Copper Mint Julep Cup/Hammered Copper Moscow Mule Mint Julep Cup 100% pure copper, beautifully handcrafted, Capacity- 12 oz. PURE COPPER Handcrafted Mint Julep cup, Holds 12 ounce. Not tainted by other metals. Food-safe lacquer coating helps preserve beauty and luster Perfect size for a Moscow Mule or Mint Julep- Also great for other cold beverages - Keeps drinks cold and delicious! Crafted of fine copper/Accented with beaded trim Not microwave or dishwasher safe.