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.
its best suitable for all aged group, because different models in one pack, money also save for different sizes available in single pack, which size u want to take based on reason u will simply easy to select and take. different types of locations we are present based on that we will take, best pack