Stackable food jar to help keep liquid or semi-solid cooked food hot/cold for up to six hours - made of thermally insulated vacuum, double walled, stainless steel. Spill-Proof: The silicon gasket on the lid makes the container spill-proof, making it ideal for carrying a variety of solid and liquid food items. Insulated: The insulated double walls of the container keeps the food hot or cold up to 6 hours. Valve: The plastic lid comes with a smart valve which releases pressure of hot food, preventing the lid from getting locked in due to steam pressure. Opens easily and safely. Easy to Clean: The wide mouth of the container makes it easy to access the food inside and also easy to clean. Material and Capacity: The container is made of steel and the lid is made of plastic. Has a capacity of 350ml.