This Mikasa Double Wall Copper Tumbler is both decorative and functional. Crafted of a double walled copper exterior, with a food-safe nickel interior, this cup features an attractive hammered design. It's perfect for enjoying cool beverages or just for display. Hand wash with warm water and a mild detergent; rinse and dry immediately. Copper tumbler measures 3-1/4 inch diameter x 4-1/2 inch high and holds 14 ounces.