ThinkGeek Periodic Copper Mug 16 Ounce Moscow Mule Cocktail Periodic Copper Mug - A ThinkGeek creation & exclusive Works great for a Moscow Mule - Not just for alcohol, great for any cold drink - Use only for cold drinks! Copper with stainless steel lining, Hand wash only. Do not use cleaners with bleach or chlorine to clean this product 4" tall x 3 1/4" diameter at lip Not microwave safe, Not dishwasher safe