Our insulated food jar has a unique hidden handle that can reduce the volume of the jar and save more space for you. It fits perfectly in school bags and boxes. The hidden handle could also avoid accidentally opening the lid while carrying school bags. Joopetalk soup thermo comes with double-wall vacuum insulation technology, that can keep food hot for 12 hours & keep food cold for 24 hours. The insulated food container has a 3.1''wide mouth. It's easy to use stainless steel foldable spoon to eat, fill food, or clean. Joopetalk thermo for hot food has an air pressure release button to help you easily open the bottle, and lunch thermo food jar is completely sealed, can prevent spilling accidents（100% Leak-Proof） Please note, pour hot water for 5-10 minutes to preheat before filling hot food, put them in the refrigerator for 5-15 minutes before filling cold food.Recommended Age 3+.