The integrated packing and 4-point lock prevent leakage! W-sealing structure that seals the perimeter of the main unit and the middle partition. It also prevents the juice from transferring inside the bento, so it also prevents the taste of side dishes from transferring. *This product is not an airtight container, so please do not put anything with a lot of moisture or soup. This can cause leakage. It is easy to clean because it is a two-part "lid with integrated packing" and a "main body container". It is dishwasher safe, making it ideal for everyday use. *When using it in a dishwasher, do not place it on the side of the steam, hot air, or hot water outlet. This can cause deformation and damage. The partitions are fixed, so you can serve side dishes and rice without hesitation. The main unit has a total capacity of 700ml, 300ml and 400ml, and you can change the amount you want to eat according to your mood that day. It is also microwave safe, so you can reheat it on the go, such as at work. *When using the microwave, be sure to remove the lid. ※ Please use it while observing the heat-resistant temperature.