Healthy and Convenience:Meal prep containers are made of plastic, BPA free, non-toxic, food grade. Enjoy the convenience of heating food conveniently and quickly, whether you are in the office or at school, you can quickly heat the food in the food storage containers through the microwave oven.Can also be used as a bento box for friends and family,and they'll be perfect for salads and fast food.It is also a good choice when going out camping.