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.
I wanted to love these but there are some problems. Firstly the size I am usually a 7 or 41 but in these an 8 is 41. Secondly although they start off pretty waterproof very soon the shoe splits away from the sole. Comfy and great idea but doesn’t last.