Customer reviews

4.2 out of 5 stars
4.2 out of 5
10 customer ratings
5 star 67% (67%) 67%
4 star 17% (17%) 17%
3 star 0% (0%) 0%
2 star 0% (0%) 0%
1 star 16% (16%) 16%
How does Amazon calculate star ratings?