Customer reviews

3.7 out of 5 stars
3.7 out of 5
3 customer ratings
5 star 34% (34%) 34%
4 star 33% (33%) 33%
3 star 0% (0%) 0%
2 star 33% (33%) 33%
1 star 0% (0%) 0%
How does Amazon calculate star ratings?