Copper mugs helps to make your Moscow Mule and other beverage feel super chilling in hot summer. The cold metal is highly effective at insulating the cold temperature of any liquid, especially good for summertime drinking, and deflecting heat from the sun. 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. UNIQUE GIFT IDEA These Cool, Hand Crafted Copper Drinking Cups Make Excellent Gifts for Both Men and Women; Great for Weddings, Anniversary Gifts for Mom and Dad or Husband/Wife, or Simply as a Fun Novelty Addition to Your Current Bar Collection MULTIPLE USES This Pure Solid Copper Drinking Mug Keeps All Your Favourite Drinks Cold and Refreshing; Used for Moscow Mules, Beer Mugs, Copper Infused Water, or any Whiskey, Vodka, Rum, and Tequila Mixed Drinks; Freeze able; Leave in the Freezer for a Frosted Mug Effect and Keep Your Drink Colder Much Longer; This Mug is Heat Sensitive; Let Hot Drinks such as Coffee or Tea Cool Prior to Use as Handle and Mug Will be Hot. 100 % satisfaction guarantee. Premium product from a premium company "PRISHA INDIA CRAFT"