Amazon calculates a product's star ratings based on a machine learned model instead of a raw data average. The model takes into account factors including the age of a rating, whether the ratings are from verified purchasers and factors that establish reviewer trustworthiness.
Ordered this for my husband who wears a size 40". It was too small and we had to return. Re-ordered tango red in medium. Amazon delivered orange in large size. Had to return. The quality of the product is good though.
Both the tag and the shirt says the size is small yet it is equal to XL(or even above ) compared to all other brands and even the size chart on the page, I don't know if the company made an error or if the product is duplicated.