Customer reviews

4.1 out of 5 stars
4.1 out of 5
158 customer ratings
5 star 67% (67%) 67%
4 star 9% (9%) 9%
3 star 5% (5%) 5%
2 star 6% (6%) 6%
1 star 12% (12%) 12%
How does Amazon calculate star ratings?