a fabric packing has a plurality of layers made of a filament of metal or plastic and includes bulges for maintaining the fabric layers at a distance . the bulges have first protuberances of generally trough - shaped configuration and second protuberances formed on the first protuberances , thereby defining respective apexes . the second protuberances are sized smaller than the first protuberances , wherein neighboring fabric layers are supported on one another via the second protuberances .