Customer reviews

4.5 out of 5 stars
4.5 out of 5
317 customer ratings
5 star 76% (76%) 76%
4 star 9% (9%) 9%
3 star 7% (7%) 7%
2 star 4% (4%) 4%
1 star 4% (4%) 4%
How does Amazon calculate star ratings?