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.
Not long after I purchased this item, one of the two toys broke and the liquid inside leaked while my son had it in his mouth. I doubt a five-month old is strong enough to break the toy, and even if that's the case, it being a baby's toy, chew toy, no less, the item has to be much more durable.