Solid Copper Hammered Moscow 16 ounce Mule Mug (Set of 2) 100% Solid Copper 16 Ounce Hammered Moscow Mule with Brass Handle and Nickle Lining Its design is a classic for serving liquor on the rocks or mixed cocktiails and produce that perfect "clink' when toasting. Perfect for any iced beverage as the copper keeps the beverage will chilled. Not recommded for Hot Beverages Food-safe Lacquer Coating Preserves Stunningly Beautiful Look. These Mule Mugs Make Fabulous Gifts. NOT dishwasher safe and are NOT for Microwave use. Tarnish resistant lacquer coating preserves beauty and luster. Wipe clean with warm damp cloth and hand dry clean Perfect for elegant entertaining or cocktail parties.