SANSAKU is the cup to enjoy sake. I designed SANSAKU to explain the charm of sake. The target are the foreigners who are interested in sake. I think that iF is an opportunity to explain SANSAKU to many foreigners, so I made an entry. SANSAKU has a dual structure. This structure is completed by molding a piece of metal plate. Therefore, you can regulate the heat you feel by changing the position of your hand. The appearance is very unique. This cup’s texture is totally different from a conventional stainless steel product, and you can look at the original structure from the bottom of the cup. SANSAKU is the innovative cup for enjoying sake.