1. Reasons to choose this thermos: This slim thermos is easy to carry and can be easily put in your backpack, wallet, fitness bag or suitcase. When you have water, you can take it out. There is no need to use disposable cups or other people's cups, which can protect the environment and prevent cross-infection. 2. Innovative vacuum insulation: Our high-performance thermos bottle can refrigerate drinks for 12 hours or keep them warm for 6 hours. Our hot water bottle can maintain the temperature for several hours and prevent condensation from forming outside the bottle. 3. Food-grade 18/10 stainless steel: This wide-mouth thermos bottle is made of food-grade SUS 316 18/10 steel, which is 100% safe for daily use. 4. Perfect portability: Put this leak-proof and sweat-proof water bottle in your lunch box, wallet or backpack without worrying about spills. Enjoy hot drinks in winter or cold drinks in summer with our small water bottle. Our multifunctional thermos can be used as a children's thermos for children to carry water, juice or milk to school. This thermos can also be used by adults as a coffee thermos for work. 5. Large size: Our modern bottles are small enough for children to hold and large enough to quench their thirst. The size of the bottle mouth is convenient for quick filling and cleaning. Fill your thermos with delicious drinks to brighten up your morning and the children's morning!