Tiger54 Handmade Moscow Mule Barrel Mug, Pure Copper - 16oz - Pack of 4 Premium handcrafted pure copper barrel mugs; No nickel or tin plating inside, pure copper Great for Moscow Mules, beer and hard drinks Keeps your drink ice cold for a long time! Excellent, aesthetic addition to your tableware collection Quality Assurance: If you are not completely satisfied, we offer a hassle-free money back guarantee Capacity: 16 oz (500ml)