Product Description: High quality double layer stainless steel inner liner with vacuum design, sealing ring, food grade and pp grade materials used along the mouth, and worry free and healthy inner liner surface with electrolytic grinding technology to prevent dirt generation. It can be insulated at room temperature for more than 40 degrees Celsius for 16 hours. The quantitative insulation pot and cup combination ensure eight healthy drinking water cups per day, meeting the needs of every healthy family. The button type bottle stopper can freely control the flow rate, fashion and color design adds freshness and romance to the family