3 Compartments : the lunch box with 3 isolation compartments - two small and one large, can allow to store different food for adults and kids Leakproof & Unmixed : lid is available for locking food in lunch box tightly, inner divider for keeping food in compartments, not mixed up in the box Healthy : middle food storage layer is made of PP Plastic Material, lid and outer bottom layer are made of food grade PP material, non-toxic and healthy Safe : easy to clean and dishwasher safe, removing middle stainless steel layer and lid, store food in outer bottom, and then put in microwave for heating Practical : lunch Box box can allow adults and kid to bring salad, snack, sandwich or other food to offices and schools.