We are the suppliers of Borosilicate Mugs & Glasses that have extreme resistance to severe temperature changes and thermal shock. Some glass mugs are insulated so you can keep the temperature of drink hot or cold for a long time. Borosilicate glass is a type of glass that contains boron trioxide which allows for a very low coefficient of thermal expansion. This means it will not crack under extreme temperature changes like regular glass. They are resistant to thermal shock than any other common glass. The offered Borosilicate Mugs & Glasses are available in various types and sizes as per the need.