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.
A very high quality cotton cashmere sweater at a great price. Considering this is Tommy Hilfiger, you'd expect to pay about double in a retail store. Fits perfectly and looks professional enough to be worn for "formal" occasions.