This coffee cup is isolated to the double-layer vacuum. The double insulation design ensures that the drink can be kept warm or cold for a long time. It allows you to enjoy hot or cold drinks. It is made of 18/8 food grade stainless steel. The inner lining of the coffee cup does not produce any smell or rust. It is recommended to wash it by hand. The body of the coffee cup has a strong structure and can be used for a long time. It is equipped with a stainless steel straw, which you can not only drink directly, but also drink freely with a straw. The secluded coffee cup has a comfortable handle, which is suitable for the hands of most people, which is very convenient to hold and place. It have different uses and are suitable for different occasions. It is the best option to use at home, office, travel and holidays. You'll be in a good mood all day with several drinks.