Application---The lunch box is not only for lunch box container, but also can be used as cooler bag, Ideal for use in the office, work, school, kindergarten, picnic and other outdoor actives. Design--- This cute lunch box mainly has 3 layers, keeping food separated and organized. The air holes on the lid make it easier to open the lunch box when you take hot food. Portable handle folds up without taking up space. Leak-proof--- Each stainless steel inner layer is fitted with a soft silicone cover and buckle design. Double protection makes the bento box anti-scalding and prevent leakage. You can bring soup or liquid food freely. Combination---This storage box set in 3 layers that you could freely combine them into 1, 2 or 3 layers lunch box to facilitate the storage of different amounts of food. Material--- The lunchbox is made of food grade stainless steel and polyethylene, safe and durable, no distortion and anti-rust, sealed silicone ring in each layer, better for keeping warm and fresh.