About this item Creatively designed with your needs in mind of Copper Mule Mugs . Not tainted by Nickel, Steel, Aluminum or other metals – Food-safe lacquer coating helps preserve beauty and luster. Handle is welded to the mug – NO tacky rivets! Handle is welded to the mug – NO tacky rivets! Perfect size for a Moscow Mule – Also great for other cold beverages – Keeps drinks cold and delicious! Definitely safe for drinking! Our mug has no inner linings such as Tin, Nickel, Steel, or other metals which will have a noticeably gross smell/taste. Caution: This mug is not for hot and highly acidic drinks. Hot and acidic drinks can accelerate copper leakage and possible reaction with copper. It has food-safe lacquer coating outside which helps preserve beauty and luster. True to their roots, our solid copper original Moscow Mule mugs offer the performance and reliability the others just can’t match Enjoy your drinks in your own way!!!!100% pure copper. No chemical or stainless steel lining! Our copper mug will frost up in mere seconds. The pure copper transmits an icy cold experience directly to your lips, and the metal locks in the drink’s coolness. The included copper shot glass makes measuring drinks a breeze, and the mugs serve up a refreshing experience for any type of cocktail!