Abstract: A cooling element includes two layers of a foil material, fastened to one another by welding connections such that a compartment closed for liquid is formed between them and at least one of the layers is vapor-transmitting over at least a portion of its surface area. The two layers of foil material include thermoplastic plastic, or polyurethane, polypropylene, or polyethylene. Alternatively or additionally, the layers of foil material include a weldable material at least at sides that face one another, and the connections are formed by welded connections. The layers of foil material and the intermediate layer may be manufactured from thermoplastic plastics.