Amazon calculates a product’s star ratings based on a machine learned model instead of a raw data average. The model takes into account factors including the age of a rating, whether the ratings are from verified purchasers, and factors that establish reviewer trustworthiness.
This is a good quality product. My son was very happy to spend the day dressed as a monkey. He was pretending to be Curious George, but the eyes were a bit too demented for Curious George, in my opinion.