Three-layer box: there are single-layer, two-layer and three-layer boxes to choose from. The three-layer lunch box has a large storage space. The first layer can be filled with rice, the second layer can be filled with vegetables without soup and the third layer can be filled with soup or liquid food. The silicone seal is sealed. Layer dressing, no smell. PP material made of stainless steel: the inner layer is made of high-quality stainless steel, is highly polished and easy to clean. The outer layer is made of food grade PP material, which is high temperature resistant, safe and hygienic. Portable handle: the concealed double curved handle is portable and suitable for home, work, travel and school. Breathable sealing valve: the air-permeable sealing valve can remove air, so that the food in the box is better sealed and the lid can be opened comfortably. Stable and leak-proof: the design of the safety lock is made of PP plastic, which can be attached with one click. The first layer of leak-proof silicone to prevent leakage.