This double walled stainless steel vacuum insulation has longer heat preservation time, can maintain 100 water to 50 after 12 hours at room temperature 25 c. The lid can be used as a water cup, and the inner lid can be easily opened by a light press, and it is easy to use and share with others. It has groove nozzle and inner silicone ring can be provided to avoid water leakage when watering; user-friendly handle and pressing cover will be more convenient to use. It is made of white food grade silica gel, which is safe and hygienic. It is detachable and easy to use. It has a sealing function to prevent heat dissipation.