Warm lunch box Multilayer super long insulated lunch bucket Office Student stainless steel lunch box Microwave oven heating3/4Layer Portable Insulated Lunch Bucket Office Student Stainless Steel Lunch Box Microwave Oven Heating Large Capacity Bento BoxProduct material: 304 stainless steel + food grade PPProduct capacity:2 layers about: 1520 ML3 layers about: 2280 ML4 layers about: 3360 MLFeature:Keeps warm for up to 6 hoursIndependent sealing coverDouble-sided buckle designSandwich fully sealed design inhibits bacterial growth304 stainless steel, acid and alkali resistant, no peculiar smellMicrowaveableInsulation bags can be purchased to effectively extend the insulation timePacking list: 1pcNote:1.The actual color may be a little different from the picture.2.Due to manual measurement, the size may have a little difference.