Customer reviews

4.2 out of 5 stars
4.2 out of 5
39 customer ratings
5 star 60% (60%) 60%
4 star 20% (20%) 20%
3 star 9% (9%) 9%
2 star 6% (6%) 6%
1 star 5% (5%) 5%
How does Amazon calculate star ratings?