SNT - Moscow Mule Polished Copper Mug 4 Pack (16oz) Beautiful Polished Surface Moscow Mule Mugs. Measures 4.2" x 4.0" x 4.2" and Holds 16 Oz Moscow Mule Food-safe Lacquer Coating. NOT dishwasher safe and are not safe for Microwave use. Stainless steel lining with a copper plated exterior and Brass Handle Wipe clean with warm damp cloth and hand dry clean These mugs make a great idea gifting!