Customer reviews

4.1 out of 5 stars
4.1 out of 5
57 customer ratings
5 star 55% (55%) 55%
4 star 21% (21%) 21%
3 star 9% (9%) 9%
2 star 9% (9%) 9%
1 star 7% (7%) 7%
How does Amazon calculate star ratings?