Customer reviews

3.9 out of 5 stars
3.9 out of 5
37 customer ratings
5 star 63% (63%) 63%
4 star 9% (9%) 9%
3 star 0% (0%) 0%
2 star 12% (12%) 12%
1 star 17% (17%) 17%
How does Amazon calculate star ratings?