Premium Moscow Mule Copper Unlined Mug, 100 % Pure Solid Copper (16-Ounce, Hammered, Sold as Eaches) 100% PURE COPPER FOOD GRADE--No nickel or stainless steel! This mug is the real deal--drink the moscow mule the way it was meant to be enjoyed, with handcrafted pure copper mug. With ~100 5-star reviews, you can buy this copper mug with confidence. ICE COLD--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. This mug serves up a refreshing experience for any type of cocktail. The inside of this mug is unlined and made from 100% pure copper, so some oxidation may take place, we recommend using any copper cleaner cream to keep your mugs looking like new. MAKE YOUR KITCHEN SHINE--This Hammered Copper Mug will really stand out in your kitchen and impress your friends. The shiny copper exterior glimmers wherever it is placed, and it's the perfect staple for the host or party-thrower. This mug is externally lacquered to maintain the luster and last a long time unlike other mugs. Beautiful yet functional! Hand Wash Recommended. NUMEROUS USESThis copper mug works great for chilled beer, iced coffee, iced tea and any vodka, gin, rum, tequila, or whiskey mixed drinks. Additionally, many experts tout the benefits of drinking water from 100% copper drinkware. The generous 16 oz. size is the perfect amount to hold your drink and ice cubes without worrying about spills. Our copper mug features a smooth lip that lets you drink in comfort, unlike the sharp edges found on other mugs. BUY GENUINE MUGS FROM A29 SELLER: Beware! A number of unscrupulous sellers are offering low quality counterfeit versions of our Moscow Mule mugs on Amazon. To insure you're getting genuine mugs as per the mentioned specifications buy only from seller 'A29'.