Keep your laptop cool at anytime anywhere, external power is not needed!. This laptop cooling mat uses macromolecular compound to absorb excess heat from the laptop. The granules of crystals, slowly absorb heat and changes their molecular appearance, forming a viscous gel. It will continually absorb heat and allow any item in contact to dissipate its own heat output, ie: when a laptop computer is placed on the mat, the mat will absorb large amounts of heat from the laptop's base. Does not disrupt the natural flow of air through the laptop's cooling vents. Laptop Mat permits more than 5 hours of continuing usage, without the need for any form of external power. Under natural conditions the granules of crystals in the laptop mat will automatically reform as the temperature once again falls below 25C allowing this coolingmat to be used time and time again. Place the laptop on the textured side of the cooling mat. Heat will be drawn away from the underside of the laptop and absorbed by the mat