FOOD SAFE MATERIAL- Made of high quality PP and stainless steel, durable, safety and non-toxic, great for you. LEAK-PROOF- Each stainless steel inner layer is fitted with a soft silicone cover and buckle design. Double protection makes the bento box anti-scalding and prevent leakage. You can bring soup or liquid food freely. PRACTICAL AND ROBUST- This lunch box with 2 compartments and the top with subdivisions. This box has 4 latches so it is very sturdy. The double layer lunch box can be taken apart and used on its own. PORTABLE- This 2-layer storage box, the lower level is single compartment, the upper level is 2 compartments for more variety and more food. APPLICATION- The lunch box is not only for the lunch box container, but also can be used as a cooler bag, great for use in office, work, school, kindergarten, picnic picnic and other outdoor activities.