Made in pure copper, lacquered finish, set of 2, capacity 15 oz, dia 3.1 inches, depth 4 inches, weight 180 grams, handmade by the artisans of moradabad, india, shipped in 24 hours from gurgaon, copper mugs helps to make your moscow mule and other beverage feel super chilling in hot summer. Copper has a very high thermal conductivity so the coldness from your mule will fly into your hands, lips and throat at an amazing rate. It will feel exactly as the icy drink. This is not possible to get that from a high ball glass.and copper mugs have become an essential ingredient for moscow mule. So many people claimed that the mule they made at home feel not right as they experienced in bars, and found the copper cups were the source of that. As for me, copper mug's natural features account for half and the emotional needs for another 50 percent. To be fair, i can't have mule without a copper cup.