Customer reviews

3.7 out of 5 stars
3.7 out of 5
5 customer ratings
5 star 54% (54%) 54%
4 star 0% (0%) 0%
3 star 12% (12%) 12%
2 star 34% (34%) 34%
1 star 0% (0%) 0%
How does Amazon calculate star ratings?