A portable thermal insulated apparatus for cooling or heating items stored therein. The thermal insulated apparatus includes a container having a lid that removably secures to an open first end thereof and a reservoir unit that removably secures to an open second end. The container includes an inner tube and an outer tube forming an insulated double-wall sealed at both ends in which the lid and reservoir unit can be connected thereto. The reservoir unit removably receives a thermal unit that provides cooling or heating to the contents of the container when affixed thereto. The thermal unit is separable from the reservoir unit, such that the thermal units are interchangeable as needed. In some embodiments, the thermal unit is directly securable to the lid and the second end of the container is permanently sealed.