I think the concept is good, not sure it's working yet, I will post a review in a few more weeks!!

Not sure about the actual product, I've only used it in the last week, one thing that I dont like about or should have been told, it overheats very easily. So I like to wear it during the day, but I also try to war it at night, but the way it is built, it wont let you have blankets on you, cause it will overheat!!!

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