Towle Living Modernist Plated Barrel Mug, 20 oz, Copper This mug is ideal for enjoying cool, refreshing drinks year round 20-once barrel mug; copper plated exterior; food-safe 18/10 stainless steel interior Measures 3 1/4-inches wide by 4 1/2-inches high Made of copper and stainless steel Hand-wash with warm water and a mild detergent; rinse and dry immediately. Do not soak