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.
Well, these are okay but not the best quality. They are thin plastic and do break easily. I'd rather have spent more money and got a few that were thicker and better quality than this many that are sort of useless to me because they don't last a long time.