Rigid refreezable portable storage container insert

An apparatus, comprising:

• a first divider panel, and
• a rigid unitary housing configured to fit within a portable storage container, the unitary housing comprising a base including an interior surface and an exterior surface, and a wall extending outwardly from the base, forming an interior space, the wall having an inner layer and an outer layer defining a refreezable material space therebetween that is configured to receive a refreezable material, at least one of the inner layer of the wall and the interior surface of the base including a first channel configured to support the first divider panel in the interior space of the unitary housing wherein the base is configured with a rigid protrusion having an outer dimension shaped to match the dimension of the inner layer of the wall of the interior space of housing in order that the rigid protrusion can be inserted within the interior space of another apparatus of the same configuration, and
• wherein the rigid protrusion includes a divider storage compartment comprising an indented section that is sized to receive the first divider panel when it is not mounted within the interior space.

An apparatus, comprising:

• a rigid, unitary housing configured to fit within a portable storage container, the unitary housing comprising a base including an interior surface and an exterior surface, and a wall extending outwardly from the base, forming an interior space, the wall having an inner layer and an outer layer defining a refreezable material space therebetween, the base being at least one of rectangular, pentagonal, and hexagonal, the wall being-tapered to enable multiple unitary housings to be stacked on one another, and
• a refreezable material disposed in the refreezable material space in direct contact with the inner layer of the wall.