[Machine Translation] Enjoy both HOT and COLD for a long time! The "Emperor's Key" two-layer stainless steel mug / Dual-layer stainless steel mug made in Japan. The double-layer stainless steel mug is made in Japan, and is characterized by the fact that cold food does not get lukewarm and hot food does not get cold (the outside does not get too hot). Made in Tsubame City, Niigata Prefecture, which boasts the world's highest level of stainless steel processing technology. Ideal for outdoor use. (Do not put it on an open flame as it may explode. Do not use abrasive scrubbers or cleansers as they may damage the body and prints. Dishwasher safe. Do not use in a microwave oven.