ThermaPAK cools hot PowerBooks

ThermaPAK offers a way to shield PowerBook users from heat generated by the computer. Excess heat can cause discomfort when using the computer for prolonged periods of time on your lap. ThermaPAK is a phase change material that goes from solid to liquid and vice versa when heat is absorbed and expelled, respectively. The material can revert "phases" for years without any noticeable changes in its heat capacity. ThermaPAK is comprised of an enclosure specifically designed to contain the phase change material and increase absorption of heat on surface contact. For convenience and simplicity, the active cooling device is built into a laptop sleeve. ThermaPAKs are priced at $50.

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