expectation problem - high45C=113F; pic with dog is not this size
as i write this review on my laptop, i have this product plugged into laptop's USB port & on highest setting directly on my belly with overlay of dress.  it is indeed providing some heat to my belly in the small area containing heating elements.  without something outside it, such as dress, blanket, jacket, tights pressing it to your body, more heat escapes than is felt.  the 2 lower settings just don't have much of an effect.  i have an excellent hoodie (ororo) with heating elements in it that i bought from amazon with 3 heating settings - low100F, med120F, high130F.  highest stated setting on this pad, which some other reviewers say was not achieved on their particular purchase, is 45C=113F, which doesn't even reach medium on my hoodie.  for those most familiar with inches, you see 30cm max dimension on this, with picture of product with dog in it & think this pad is that size.  it is not; it is less (30cm=12").  i guess if you do a lot of work or school assignments in espresso shops with you laptop plugged in & had this low profile lightweight pad in your carrier available in case you wanted to use the USB port to overcome an overbearing AC or draft from door opening & shutting in cold weather this might be useful.  in short, this seems to solve only very boutique problems, but at least inexpensively.
Rating: 3 stars