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, store food in outer bottom, and then put in microwave for heating. Practical: lunch Box can allow adults and kid to bring salad, snack, sandwich or other food to offices and schools. Unody breakable body with easy to clean.