Features: Made of high quality stainless steel material, heat-resistant, broken-resistant, corrosion resistant, and durable in use. The portable handle is foldable, easy and convenient store and carry. The vent hole can let the food in box to be better sealed. The safety buckle makes the box lid and box body be buckled tightly, safe to carry. There are 4 kinds of capacity to choose from (700ml, 1400ml, 2100ml, 2800ml). Free assembly and disassembly. You can change the size and capacity according to your needs. Specification: Material: Stainless Steel Color: As the picture shown Capacity: 700ml/1400ml/2100ml/2800ml (optional) Size: 1 layer: Approx. 9.5*16.5 cm / 3.7*6.5 inch 2 layers: Approx. 14.5*16.5 cm / 5.7*6.5 inch 3 layers: Approx. 20.5*16.5 cm / 8.1*6.5 inch 4 layers: Approx. 26.5*16.5 cm / 10.4*6.5 inch Weight: Approx. 336-763g / 11.9-26.9 oz Warm Tips: 1.This lunch box is a hollow structure, not a vacuum insulation. The insulation aging is generally about 2-3 hours. The