To calculate the overall star rating and percentage breakdown by star, we don’t use a simple average. Instead, our system considers things like how recent a review is and if the reviewer bought the item on Amazon. It also analyses reviews to verify trustworthiness.
It is very important that I keep my fingers warm as I suffer with Raynaud's (poor circulation of the extremities). I have been using these constantly, especially during the cold Winter, and they do a very good job. Doug