Feature: 100% PURE COPPER CLASSIC MUG FOOD GRADE--No nickel or stainless steel, Pure Food Grade Copper. These mugs are handcrafted pure Smooth copper 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. The inside of the mugs 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--These Hammered Copper Mugs 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. These mugs are externally Food Safe lacquered to maintain the luster and last a long time unlike other mugs. Beautiful yet functional! Hand Wash Recommended. 16 OZ CAPACITY HAS NUMEROUS USES--Our 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 icecubes without worrying about spills. Our copper cups feature a smooth lip that lets you drink in comfort, unlike the compatible with sharp edges found on other mugs. Make for a great gift! Specifications: Material: copper Color: gold Capacity: 16oz/450 ml Diameter: 82MM / 3.23in Height: 90MM / 3.54in Package Includes: 1 x Pure Copper Mule Mug Notice:This will oxidize after a long time