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...http://www.google.es/patents/US7900471?utm_source=gb-gplus-sharePatente US7900471 - Pre-packaged, flexible container of ice and air
