ThermaPAK Memory Foam Laptop HeatShift Bag is the most effective solution to keep your laptop cool, protected, and mobile. The laptop bag is made of high density visco-elastic memory foam to protect your laptop from dings and scratches. Within the bag is a removable pad that uses ThermaPAK’s patented HeatShift Technology to dissipate heat away from your laptop computer. The HeatShift Pad performs better than USB cooling devices which typically use primitive fans. The HeatShift Pad is made of a safe, laboratory tested cooling crystals that has been proven to lower temperatures in computers by more than six degrees Celsius. It requires no power, no refrigeration, and generates no noise.