The double wall glasses can be used the whole year round. You can use them for your cold drinks in summer and hot drinks in winter. It features a double wall construction to help keep coffee hot and hands cool.They are made of a very strong but yet light weight glass (borosilicate glass). Borosilicate glass is a strong heat-resistant glass that weighs less than traditional glassware. Used to make scientific lab glass, borosilicate glass (medical grade glass) is stronger than traditional "soda-lime" glass and can be used for everything from drinkware to cookware. They can safely go in the dishwasher and microwave. No coaster needed.

Item No: DC020

Volume: 200ml-300ml

FOB Port: Tianjin,China

Payment Terms: T/T or L/C