Lunch box is made of food-grade materials and high quality stainless steel.Non-toxic,testeless,health and safety. Box identity layer design can separate out the food in the two layers,effectively prevent odor. High temperature,strength, wear resistance and non-toxic, its heat preservation can last for 2~4 hours when the indoor temperature is below 15℃. Lock tight, good sealing effect, which can prevent leakage effectively. The lid with extended fastening design,it can close the lid and box tightly Specification: Material: Stainless Steel Heat preservation time: 2~3 hours Size: One layer: 18x7.5cm,Capacity: 0.9L,Weight:260g Two layers: 18x13cm,Capacity: 1.7L,Weight:454g Three layers: 18x18.5cm,Capacity: 2.5L,Weight:673g Color: Blue,Green,Pink Note:The lunch box can not be put into the microwave. Package included: 1 x Stainless Steel Lunch Box