Customer reviews

4.2 out of 5 stars
4.2 out of 5
356 customer ratings
5 star 58% (58%) 58%
4 star 23% (23%) 23%
3 star 9% (9%) 9%
2 star 6% (6%) 6%
1 star 4% (4%) 4%
How does Amazon calculate star ratings?