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.
I have bought so many of these - we are foster carers and cannot live without multiple mattress protectors. They perform as expected and keep the mattress spotless and hygienic. They are very affordable and wash and wear well.