ThermaPAK Laptop Cooling HeatShift Pad is the most effective solution against laptop computer heat. The HeatShift Pad performs better than fan based USB cooling devices. It uses ThermaPAK's patented HeatShift Technology to dissipate heat away from your notbeook. It is made of a safe, laboratory tested chemical that has been proven to lower temperatures. It requires no power, no refrigeration, and generates no noise.