OCIA.net has posted their review of the Thermaltake iXoft Notebook Cooling Pad.
A quote from the article:
>> Thermaltake iXoft Notebook Cooling Pad Review
The material inside is sodium sulfate decahydrate, Na2SO410H2O, also known as Glauber's salt. This material changes phases (from solid to liquid) at 32 C (90 F), which makes this product excellent at storing heat and is commonly used to store thermal energy for solar heating systems.
>> Thermaltake iXoft Notebook Cooling Pad Review