Silver has the highest thermal conductivity of all metals. The entire cup chills instantly when a cold beverage is poured in, allowing you to enjoy the ultimate refreshing sensation from the first sip. This is a special sake vessel designed to enjoy a small beer or cold sake in the best possible condition. You can enjoy it as a lifetime tool. [Set Contents] • Small beer cups x 5 • Special wooden box • Silverware pamphlet Please try the luxurious weight and mouthfeel unique to silverware during your evening drinks at home. Non-returnable