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 love JanSport backpack because they are durable. The last JanSport backpack I bought has lasted me over 7 years. This one is really lasting and I love the design. Definitely will keep buying JanSport backpacks.