for Health and the lunch box is food grade silicone, which is than ordinary materials. It is suitable for microwave ovens and refrigerators, which is safe for your for health for design: hot be discharged, and water for will not form in the lunch box. Therefore, it is not applicable to liquids that may leak from the for such as water and soup. When using the microwave oven, you need to pull up the vent for Two different sizes: two sizes meet your different needs. Small 1780 ml, large 2450 ml Space saving: the foldable design saves more than 60% of your space. Silicone storage containers are for you to store and save you a lot of space. Microwave ovens, refrigerators and dishwashers are safe Use in many occasions: silicone foldable lunch box is very suitable for indoor food storage, such as families, restaurants, as well as outdoor activities, such as offices, schools, picnics, companies, camping, hiking, travel