"Design with special texture" Copper tumbler with excellent heat conduction. When you pour a drink, the coldness is quickly transmitted and retains the coldness. It is a tumbler that makes beer cold and delicious. The design with a special texture is pleasant to the touch and creates a special time. It comes in a paulownia box and is a gem recommended for special gifts. "Ginkobi" In addition to the metal processing technology that has continued for 400 years since the Edo period, we have incorporated a new processing "Ginkobi" that dares to make the silver plating old and produce a blue color. The elegant design that shines blue does not have the same brilliance twice, giving you a unique and special feeling. The contrast between silver and blue is a graceful design. "Tin ion effect" The inside of the copper vessel is tin-plated. Tin has a high ionic effect, and it is said that it removes the unpleasant taste of alcohol and makes it delicious and mellow. Since tin has a bactericidal effect, it has been used in sake cups since ancient times. 【Product Specifications】 〇 Set contents/Tumbler × 2 Size/Approx. diameter 77×137mm Weight: 188g Volume: 440ml Material: Pure copper (outer silver plating old beauty finish, inner silver plating) made in Japan JAN：4975192087190 SD:10595063 *For cold drinks only * Please note that due to natural coloring, the color will not be exactly the same as the product image (the degree of shade etc. may vary).