Introducing the Tanyu Bio Mug, made of Bio-Ceramic. The materials are mixed with various mineral oxides and are heated over 1600 degress celcius before they are bring and left to cool down, allowing mugs to emit far-infared rays. These combined can enhance the freshness level of water while increasing oxygen levels. Purified water let your body maintain its warmth longer and therefore it will also give you better sleep. it ionizes and activates water molecules in our cells and blood thus improving our blood circulation and health conditions. Pure water can also be beneficial for normalization of blood cholesterol levels. Bio Ceramic and Far Infared Rays do prevent mold and therefore it can keep you drinking water pure for longer period.