Matte and lacquered Finish: Pure quality Copper will oxidize when it gets in contact with the atmospheric air, to avoid this our copper bottles are coated with matte and Lacquered finish. The matte and lacquered finish will add elegance and style to the product. Copper Quality: bottles are manufactured with pure copper both inside and outside of the bottle. Leakproof and Jointless: The bottle is made with a single piece of copper without any joints and hence we need not worry about leakage. The lid is made in a way making the opening and closing of the bottle smoother. A high-Quality Washer is used to make the product leakage. Travel anywhere without fear of leakage issues.