1. ** Keep heat ** : The inner layer of the thermos cup is usually made of stainless steel and uses vacuum insulation technology, which can effectively prevent heat transfer through the wall of the cup, so that hot drinks such as coffee, tea or soup can stay hot for several hours.

2. ** Keep cold ** : The same heat insulation principle also applies to cold drinks, thermos cups can keep cold water, ice drinks or other cold food for several hours without heating up, very suitable for summer use.

3. ** Portability ** : Thermos cup is usually compact in design, good in sealing, easy to carry, very suitable for office workers, students, travelers and people who carry out outdoor activities.

4. ** Environmental protection ** : The use of thermos cups can reduce the use of disposable plastic cups or paper cups, helping to reduce environmental pollution and waste generation.

5. ** Health ** : The material of the thermos cup is usually food-grade stainless steel, which does not contain harmful substances, and will not release potentially harmful chemicals at high temperatures like some plastic cups.

6. Energy saving: Because the drink can maintain the original temperature for a long time, it reduces the need for repeated heating, thus saving energy.

7. ** Multi-purpose ** : In addition to holding drinks, thermos cups can also be used to store food, such as porridge, soup or cooked food, to maintain the temperature of food.

8. ** Health ** : The thermos cup is easy to clean and maintain, which can ensure the cleanliness and hygiene when drinking.

9. ** Customization ** : There are various styles, sizes and colors of thermos cups on the market to choose from, and even personalized patterns can be customized.

10. ** Economic benefits ** : Although the initial investment of thermos cups may be higher than that of disposable drinking containers, in the long run, the cost of purchasing disposable beverage containers can be saved due to its durability.

In short, the thermos cup is a very practical everyday item, it can not only provide convenience, but also help users save costs, while being friendly to the environment.