Prolongs battery and laptop life.washing easily and reperted using for long time if without damaging.light weight and easyto folding and carrying.widely used, suitable for10 inch to 17 inch.Novel and fashion, suitable for office, SOHO, outdoor leisure, it is the best commpanion of laptop.The only one dares to expose internal material, and applied different patents!Working principle & Effect:The laptop cooling pad uses a macromolecular compound for the absorption of excess heat. this macromolecular compound remains in granular or crystal format up to temperatures of 77F. The granules or crystals slowly absorb heat and change their molecular appearance, forming a viscous gel, what continually absorb heat.if the pad have become liquid under the high temperature, it could be put into the fridge to freeze eagerly then crystal soon.Physical properties: white, transparent, non-toxic, smelless, soluble in water.Crystaltemperature: below 77F.PH figure: 8.3-9.2(weak alkaline).Density: 1.58