FOOD GRADE TARNISH RESISTANT: Pure Copper - Coated with food grade lacquer on inside and outside to retain its shine. TOP QUALITY - Keep your drinks icy-cold, No nickel, tin, or other metals on copper mugs! 100% copper to give your Moscow mule the perfect taste. 16 oz. size just like the original 1941 copper Moscow mule mug. IMPRESSIVE HANDCRAFTING - HAND HAMMERED DESIGN: These are genuinely handcrafted Copper Moscow Mule Mugs. From application of the large brass handle to the stable base wide straw design, the attention to detail when crafting these copper mugs is unmatched. 100% Guarantee of Quality. Order Now!