Abstract: The invention relates to a refrigeration system for use in motor-cars equipped with an air-conditioning system. The refrigeration system comprises a metal cooling mantle through which a cold refrigerant is circulated, the size of the mantle being such as to closely fit a standard beverage can or bottle. Preferably, the mantle has a gap along one of its sides parallel to the axis, so that when there is circulated a refrigerant through the said mantle, the gap narrows or closes, thus establishing contact between the inner surface of the mantle and the beverage container. The cooling is rapid and takes up only a small part of the cooling capacity of the air-conditioning system.