Prisha 100% Pure Copper Mugs for Cocktails/Handmade Leak Proof Copper Vessel with Lacquered Finish for Drinking Water/ Joint Free Moscow Mules with Ayurvedic Health Benefits, 18 Ounce, Set of 2 These copper mule mugs are made of 100% pure copper, handcrafted by skilled artisans using traditional techniques. Includes: 2 Copper Mule Mug | Capacity of 550 ml (18 oz) each. Each of our cold drink mugs are shaped from a single sheet of pure copper making it ideal to serve any cold drinks such as ginger beer, vodka, lime, whiskey, rum, tequila and any beverage mixed drinks Constructed with no inside liner/coating, the copper begins to oxidize when comes in contact with any cold drink, slightly boosting the aroma and enhancing the taste of the drink. The outside of our mixology copper mugs are coated with a food grade lacquer to prevent tarnishing on the outside of your mug. Cold copper cups also has a tendency to increase the amount of bubbles in the carbonated ginger beer, bringing maximum fizziness to the Moscow Mule, when compared to being served in a plastic or glass container. Health benefits of raw copper mugs: improves digestive system, builds strong immune system, supports weight loss, prevents aging, prevents cancer, maintains cardiovascular health, supports the thyroid gland, stimulates the brain, fights arthritis & inflamed joints, keeps skin healthy and acne free