Portable Insulated Food Lunch Container Set with Thermal Lunch Box 3 Separate Stackable Lunch Container for Adult Kids Bento Box Set include Large container550ml *1, Small container420ml *2, Insulated Lunch Bag *1. The Insulated lunch box is designed with food grade 304 stainless steel inside, PU insulation materials middle, and plastic PP outside. At room temperature this food thermos usually keep warm/cold for 3 hours. The stackable containers can store different foods according to your preferences and needs,, such as hot food, pasta, soup, salad. Effectively prevent food from mixed with each other and ensure the original flavor of food. Each thermal lunch box has a separate lid. There is a built -in sealing silicone ring on the lid to prevent the sauce and soup from overflowing. There is an exhaust valve on the top of the lid, which can discharge the air in the container at any time, making the lunch box easier to open. This set of beno boxes can meet all your needs, which is convenient to carry food, suitable for work, office, picnic or camping.