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.
Regarding the product it's not mentioned that it's a material. Seeing the ad it seems to be a readymade that's the reason why we purchased. But after receiving only it a material not a readymade one. Kindly check