US Patent 7201285 Dual function insulating holder for bottle or can

An insulating holder for holding a beverage in a bottle or a can having a lower cylindrical enclosure which receives an upper enclosure having a dome-shaped upper end. The upper and lower enclosures are provided with mating threads or other mating devices to hold the upper and lower enclosures in place when enjoyed. The upper enclosure is adapted to cover the top portion of a bottle inserted into the lower enclosure and to snuggly receive a can when inverted and inserted into the lower enclosure.