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.
You can not use this in your shoes because your feet slide out. And you can't wear them just around the house because they stick to things. I have mine in a box to send back but I haven't sent them back