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 exactly what i was looking for. The toilet seat cover sits on top of the lid by two elastic straps on the bottom instead of a more fitted type. I probably wont use it, but the value for the two mats alone is good for me.