... sleeping, when sleeping, not need open the air-condition, which can avoid to have a air-condition ill, and at the same time ... a refrigerator cooled, then dry it to re-use. (3).Applies to: car, office, sofa, home and outdoor use(4)Product Dimensions: 47*37cm ... and other characteristics, do not require refrigeration before use. (2).The product is helpful to resolve the problem--- the computer slowing heat ...