product content [Smile Blue, with microwaveable container].Safe & DurableThe interior of the stackable lunch box is made of high quality food-grade stainless steel, which is BPA-free, never rust, does not retain flavors or scents; the exterior and lid are made of food-grade safe plastic, non-toxic and odorless. So you could use it with confidence.Stackable & FlexibleThe 4-layer stainless steel lunch box mainly has 3 layers food containers, adding a top small plate is equivalent to 4 layers, which perfectly keeps food separated and organized. - You can pack a variety of healthy foods such as fruits, pasta and soup in 3 leakproof food containers, and pack small pieces of snack or thick sauce in the mini plate. - In addition, you can stack them up or down, and flexibly combine them into single, double or triple layers as needed.Leak & Spill ProofEach layer of the stackable lunch box is designed with a sealed silicone ring, which can prevent the sauce and soup from leaking, and can also lock in the freshness and odors. Therefore, you can pack your favorite soup in this leakproof lunch box without any worries.Keep Food Warm or ColdThe stainless steel lunch box with an insulated lunch bag usually keeps hot food warm for about 3-4 hours, but keeps it fresh all long; of course it can also be used for cold food (Please note that the holding time will be affected by the local temperature).Lunch Bag and Flatware Set IncludedThe insulated lunch bag is made of fashionable denim fabric exterior and food-grade aluminum foil interior, which not only enhances the heat preservation time of the lunch box, but also makes it easy to carry. A free portable flatware set is also provided, which can be put into the lunch bag with the lunch box, you dont need to spend much time in choosing cutlery of inappropriate size. Provide everything you need, making it easy for you to take it with you.