Amazon calculates a product’s star ratings using a machine learned model instead of a raw data average. The machine learned model takes into account factors including: the age of a review, helpfulness votes by customers and whether the reviews are from verified purchases.
Fit true to size for my partner who wears mens US9. Been wearing them inside and outside the house for a year and a half and they’re still going strong. Have bought other styles for family members and they all love them!!