The copper bottles are entirely hand made. Whether given as a gift or used for dinner parties, this product sure to be a great conversation piece. The most scientific benefit of using copper Product is temperature. For centuries, the best drinkers have known that chilled drinks in copper product offer an extra-cool sensation, due to the metal quickly taking on the icy temperature of the cocktail. This mule mug is a proper copper glassware , which is absolutely essential for the entire sipping experience. Pick this mug,enjoy your favorite cold drink,vodka,ginger beer or lime and make it memorable.