Customer reviews

3.4 out of 5 stars
3.4 out of 5
9 customer ratings
5 star 36% (36%) 36%
4 star 17% (17%) 17%
3 star 15% (15%) 15%
2 star 16% (16%) 16%
1 star 16% (16%) 16%
How does Amazon calculate star ratings?