US Patent 7900471 Pre-packaged, flexible container of ice and air

A pre-packaged, flexible container of ice and air is disclosed. The pre-packaged, flexible container includes a first member having a hermetically sealed outer periphery which encloses a cavity. The cavity has a volume of less than about 20 cubic inches. The flexible container also includes ice and air contained within the cavity. The ice is present as an individual piece or as multiple pieces. The remainder of the cavity is occupied by air. The air fills at least about 50% of the volume of the cavity. Furthermore, the container, ice and air have a combined weight of less than about 5 ounces.