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 is good. Quality is good too. The only problem I've had with this particular piece is that the puma logo has a 3-D effect (it's very faint). When purchasing it, it wasn't too distinct in the photo.