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.
It's neither thin nor very thick so quality is average. It has slight fleece so good for lightly cool weather or seating in AC. It works for me but if you are looking for cold weather then look for something else.