A universal insulating beverage container cover device that expands to accommodate various sizes and shapes of beverage containers. The device is constructed of multiple panels of insulated material, such as stainless steel with double-wall vacuum insulation walls, that can expand and contract relative to each other depending on the size of the beverage container inserted into the container cover device. The bottom of the beverage container cover device also allows for expansion and contraction so that the size of the bottom of the drinking container can fit snuggly into the insulating beverage cover device as well.