Airtight lunch box The breathable sealing valve can exclude air, making the food in better sealed and making it easier to open the lid. Insulated lunch box The integrated rubber gasket improves the sealing performance of the lunch box. The lunch box can keep food fresh and help you balance your diet. Leak-proof design The safety lock design is made of PP plastic and can be fixed with one click to prevent water leakage, allowing you to enjoy your food comfortably during lunch. Hygiene and health: The inner layer is made of high-quality stainless steel, with high polishing degree and easy to clean; the outer layer is made of food-grade PP material, which is high temperature , safe and hygienic. Cute and practical hidden double curved handles are compact and portable, suitable for home, work, travel and school.