Customer reviews

4.2 out of 5 stars
4.2 out of 5
8 customer ratings
5 star 49% (49%) 49%
4 star 17% (17%) 17%
3 star 33% (33%) 33%
2 star 0% (0%) 0%
1 star 0% (0%) 0%
How does Amazon calculate star ratings?