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.
Nice product. Very comfortable. Good quality but not as good as others I've purchased in the past (which are no longer available). These are a much better product than other 'hidden' socks. Would order again when needed.