... comfortable,innoxious . the cooling pillow/mattress/cushion can keep temperature constant for 8 to 10 hours. The phase change materials look ... health care field and use to, plastic-covered tunnel temperature insulation, and camping equipment etc.,. the cooling cushion can ... material: PVC,TPU composite waterproof fabric 4,specification :cooling children pillow:30*15cm,20*35cmcooling mattress:45*90cm,90* ...