Abstract: A portable water cooled mattress for use with infants or the like comprising an air bladder lower level constructed of an air proof material and including an inflation and deflation opening valve. A water bladder layer is positioned on a top surface of the air bladder and includes a fill and empty spout valve while a pocket is formed between the water bladder and air bladder suitable for inserting either heating and/or cooling packs as desired. An insulating upper layer covers the water bladder preventing the child from becoming dampened from condensation.