Yes, it is getting popular in Japan. The jacket works by generating air flow between your skin and the jacket evaporating your sweat. Evaporation, in turn, absorbs heat from surroundings. It works great if you are barbequing with no wind. If you are required to wear long sleeves in hot weather, such as working in apiary or cutting bushes, this works perfectly.
Good to hear that yours worked. Yes, it is kind of awkward to sit on a chair due to the bulk of the fans on my back. In terms of functionality, it would be convenient to have them in front. Thank you for your great suggestion!
Let me know if you have any problem.
Cheap and Easy Fan Cooling JacketView Instructable »
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