Mine gets VERY hot
I like this, but mine gets VERY hot and I think it has somewhat burnt the outside fabric baggy that it goes in. It may be because I put it under my blankets to warm my feet and it just got over heated? The instructions I received were quite difficult to understand, so if the instructions said to not put it under blankets, I didn't catch it. Be aware that it might be a fire hazard in that way. Other than that, it is a great way to keep a part of your body warm (hot, if you use it for a while) and VERY fast charging.
Rating: 3 stars