The product is made from ingredients to ensure the health of users - Inside is a 304 stainless steel core to help increase the ability to retain heat of the box, prevent the box from smelling, clean the bowl properly. The lid is designed with a sturdy buckle plus a rubber ring around so you can store food comfortably without worrying about leaking out. - With a design of 2 separate compartments, you can comfortably store food without worrying about the taste of the dishes being mixed together, helping you have a more delicious meal. - - Stainless steel core and plastic outer shell have a removable design so you can keep food hot for longer. -