Abstract: A container assembly for maintaining a temperature of a liquid includes an outer wall defining an interior cavity for storing the liquid. The container assembly also includes an inner wall indirectly connected to the outer wall. The inner wall defines an external cavity configured to receive a thermal cartridge for maintaining the temperature of the material within the inner cavity. The thermal cartridge includes a base portion configured to couple the thermal cartridge to the container assembly. The thermal cartridge also includes an insert portion configured to be received by the external cavity. The base portion and the insert portion unitarily form the thermal cartridge.

Abstract: A sandwich container includes an outer housing. The outer housing includes a tray compartment body and a lid compartment body. The tray compartment body is hingedly connected to the lid compartment body. The tray compartment body defines a tray compartment and the lid compartment body defines a lid compartment. The sandwich container also includes a divider hingedly connected to the outer housing. The divider is rotatable from an unseated position to a seated position. The divider is configured to separate the tray compartment from the lid compartment when the divider is in the seated position.

Abstract: A flexible divider for separating a lower compartment of a container from an upper compartment of the container includes a transverse member and a rim defining an outer perimeter of the divider. The flexible divider also includes a flexible wall connecting the transverse member to the rim. The flexible wall is configured to facilitate movement of the transverse member from an upper stable position to a lower stable position.