A removably attachable insulator having a jacket adapted to slide over a container for keeping the contents of the container at or near a predetermined temperature is provided. The jacket may include heating elements attached thereto for heating the container. A control circuitry is also integrated with the jacket, the control circuitry providing a thermostat adapted to set and control the temperature through operatively associating with the heating elements. The jacket and container may become removably attached through the use of detachable fasteners integrated with the container and or the jacket.