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.
Free size will fit for people with a show size of 7 or 8. Don’t buy if ur regular shoe size is 9 or above. Also it feels quite hot after wearing, zero ventilation. But at the end of the day, u can’t expect more for this money.