?12 h Hot and 24 h Cold? This thermo for hot food uses double-wall vacuum insulation and seamless welding technology. So thermo for hot food can stay hot for up to 12 hours or cold for up to 24 hours. You can enjoy hot food and soup in the office during lunch time! ?316 Stainless Steel Liner? This thermo for hot food uses 316 stainless steel liner (the highest food grade). 316 stainless steel is based on 18/8 stainless steel and adds molybdenum and other elements, which makes it more corrosive, durable and healthier. BPA free. You and your family can use the soup thermo with confidence. ?Leak-Proof Design? This soup thermo for adults adopts a double-layer wave design threaded cup mouth. And the lid has a silicone seal. So soup thermo for adults is completely sealed. You can safely put food thermo in your bag and it won't leak when shaken or inverted. ?Wide Bore for Easy Filling? This food thermo has a capacity of 27 ounces (800 ml), which is perfect for students and office workers. And the diameter of this soup thermo for adults is 3.14 inches, which makes filling and cleaning very simple. ?Instructions for Use?When you want to load hot food, please pour hot water for 5-10 minutes to preheat. When you want to put in cold food such as yogurt and salad, please put soup thermo for adults in the refrigerator for 5-15 minutes before adding it. And please press and hold the air pressure release button before opening the thermo for hot food, which will help you open the bottle easily.