... waterproof fabric3,The cooling cushion is Quite soft,innoxious,shapely and scentle.4,size: 30*15cm,20*35cm.30*35cm,40 ... . The phase change materials look likes flocculent white snow and have some flexibility, and are prone to plasticity. Having been overcome the ... are suitable for applying in energy-saving buildings, household hot and cold pad, cooling cushion/mattress,heat bags in health care field ...