Customer reviews

4.4 out of 5 stars
4.4 out of 5
553 customer ratings
5 star 74% (74%) 74%
4 star 9% (9%) 9%
3 star 7% (7%) 7%
2 star 5% (5%) 5%
1 star 5% (5%) 5%
How does Amazon calculate star ratings?