Popular in Japan, the stainless steel Sergeant Seagull lunch box made in Thailand now comes with a mini bowl/storage container with lid, making it even easier to use. The inorganic all-stainless steel material has a somewhat Showa-era retro vibe and nostalgia, and it has a functional beauty that is efficient in use. The simple traditional Thai style bento box makes the colors of the rice balls and vegetables even more delicious and stand out. The lid is bulging and softly dome-shaped. It gently covers the side dishes without crushing them. Perfect for a hearty nokke bento. With ample capacity and a stainless steel design that prevents odors, it's also excellent as a storage container for pre-made side dishes or bulk food purchases. Stainless steel has excellent thermal conductivity, so it maintains its temperature for a long time whether you warm or cool it. In summer, put somen noodles or cold noodles in an insulated bag together with the ice pack. Open flames are allowed, so you can warm them directly on the stove in winter, of course. (※ It gets very hot, so please be careful to avoid burns.) Compared to plastic or gaskets, it leaves no slippery grease, odor, or color residue after washing, leaving it clean and refreshing. Stainless steel containers that are resistant to scratches prevent dirt and bacteria from entering, making them easy to maintain hygiene during summer and the rainy season. Also, the simple structure without a gasket between the lid and main body makes washing easy, which is a great point. The rounded corners thoroughly wash away dirt from the edges without leaving any residue. Also, the mini bowl in the set can be added to serve side dishes, salads, fruits, and other small amounts of soup. After eating, you can store it completely in your lunch box. This product is sized to fit straight into your bag. If you make sure not to tilt it, this simple and very easy-to-use lunch box is available. Please be very careful when carrying both the main unit and stocker upside down or tilting them upside down to cause juice leakage. Also, stainless steel products cannot be used in a microwave, so if you do, please transfer to a microwave-safe container. As a guideline, the typical capacity for a lunch box is 800ml for adult men and 600ml for adult women. The oval lunch box comes in two sizes: 16cm (730ml) and 17cm (800ml), so you can choose according to your portion size.