Features: Featuring a three layer insulated design with premium 304 stainless steel, this lunch box enhances heat retention by 50% to keep meals warm for hours, solving common insulation issues in traditional containers for efficient temperature control. Its versatile bentos box setup prevents flavor mixing, includes microwave safe heating by opening the vent gates for 5 6 minutes, and boasts a leak proof seal using silicone gaskets to reduce spills by 40% for secure transport. Ideal for busy office workers, students, families, singles, and health focused individuals who prioritize balanced nutrition and convenience in their daily routines. Perfect for office lunches, school meals, commuting, outdoor picnics, or travel, ensuring easy and mess release food carrying without worrying about leaks or cold dishes. With 400ml and 600ml size option, this insulated food container supports healthy eating habits, making it a must have for maintaining freshness and portion control in any lifestyle. Specifications: Materials: 304 Stainless Steel 400ml Size:Approx.11.5x6.5cm/4.52x2.55inches 600ml Size:Appox.11.5x9cm/4.52x3.54inches Color:Brown/ /Green/Cream Yellow/Vintage Red Package Includes: 1Pc Stainless Steel Insulated Lunch Box note: Please allow 1-2cm error due to manual measurement. Please make sure you do not mind before you bid. Due to the differences between different monitors, the picture may not reflect the actual color. Thanks!