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.
I bought this wallet in August and I am using it till now. No issues. Super cool. Last week I ordered this same wallet to gift my mom. This time, I received a damaged wallet. The zip was about to break and was rusted. Also, the material was poor. Returning the product