Your obsession with perfectly chilled Moscow Mules is complete now that you have the Copper Mule Mug - Set of 4. You can never have too many copper mugs, though watch your stash as these beauties might just walk away. Solid hammered copper is polished to a high gleam, and a stylish brass handle and light hammered details add sass. This set includes four 16 oz. copper cups designed to beautifully conduct cold so your Mules will be frosty in a flash.