This tight lunch box features a dome-shaped lid that allows for fluffy arrangements. It prevents nori and other toppings from sticking to the lid and getting crushed. It comes with tall dividers to keep your side dishes from shifting. Dishwasher safe and microwave-safe (remove the lid). Includes a name sticker. [Product Size (approx.)] Size: Width 131 x Depth 114 x Height 55mm Capacity: 270ml [Quality Indication (Heat Resistance)] Lid: AS resin (heat resistance 100 degrees Celsius) Body/Divider: Polypropylene (heat resistance 140 degrees Celsius) Fastener: ABS resin (heat resistance 100 degrees Celsius) Gasket: Silicone rubber (heat resistance 140 degrees Celsius) Type of antibacterial agent used: Inorganic antibacterial agent This item will be shipped via Yu-Packet Plus, so price reductions are not available.