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.
I got tired of cheap polos from department stores not looking so smart, and wearing easily. This cost a bit more but is better quality and lasts longer. I found them on the small/ fitted side, so bought a size up. I ended up buying a few in both M and L. If you are tall, you might find them on the shorter side.