Those two colored double wall glass tea or
coffee cups are made of colored borosilicate glass tubes with superior heat resistant quality
Thank you for purchase of the high quality C&C brand borosilicate glass double wall insulated beverage glassware,which is made according to the highest standards in quality and durability.
All pieces of C&C brand double wall borosilicate glass insulated beverage glassware is made from borosilicate glass in double wall structure.While preventing you from burning your hands when filled with hot beverages and eliminating sweats on the outside when filled with cold drinks,it keeps your beverage hot and cold for a longer duration than traditional glassware in single wall structure.
Borosilicate glass is a special type of glass renowned for its superior resistance to chemical corrosion,heat,thermal shock and scratches.In addition,it is much lighter in weight but more solid in structure and so more durable than traditional soda lime glass.Thus,C&C brand borosilicate glass double wall insulated beverage glassware weighs so light even in double wall structure and remains durable even with the two layers of thin walls.Due to the properties of borosilicate glass,the glassware remains clear throughout its life span.