This lunch box is made of high-quality PP Plastic Leak Proof material, durable, safe, and healthy to use. It has fine workmanship and a smooth surface, and it is very easy to clean and carry, perfect for using as a crisper in your fridge, a food storage box in your kitchen, or carrying foods to the office or school. Such a practical and convenient to use, you're worth it! It's super durable because the lunch box made from plastic is very strong. The lunch box comes with three detachable compartments with seal ring between the grids. It has a rubber ring inside to keep it completely sealed and reduce the loss of heat from the food.