Four Solid Pure Copper Antique Design Moscow Mule Mugs Cups 16 Oz Ayurveda Healing #Mmm13-4 Manufacturer - Deals On The Planet. Capacity: 16 OZ Height: About 3.9 inches; Diameter: About 3.25 inches at top Made of Pure Copper with Copper Handle (Not Copper Plated) Antique Design; Non-Lacquered; Not for microwave purposes; Wipe clean with warm damp cloth and dry clean; As these are made of Pure Copper, these mugs tarnish after some time.