Abstract: The double walled vacuum insulated beverage housing system provides an aperture for receiving a heat transfer unit. The heat transfer unit also provides an aperture for receiving a beverage vessel within the heat transfer unit. The heat transfer unit stores a heat transfer material including but not limited to a fluid, gel, phase change material, or other substance that can be heated or cooled depending upon the desired effect on the beverage. A retention shoulder secures the heat transfer unit adjacent an insulating chamber to insulate both the heat transfer unit and the beverage.

Abstract: The cooling insert provides an aperture for cooling or warming items within the aperture. The insert collapses to a collapsed position and expands to a use position. The insert stores a heat transfer material to provide a cooling or warming effect depending on the needs of the user. Adjustable walls pivot toward a central wall to collapse to a storage position. The adjustable walls pivot outward from the central wall to expand to the use position to form compartments for placement of items to be cooled or warmed.