Customer reviews

4.2 out of 5 stars
4.2 out of 5
1,584 customer ratings
5 star 56% (56%) 56%
4 star 22% (22%) 22%
3 star 10% (10%) 10%
2 star 4% (4%) 4%
1 star 7% (7%) 7%
How does Amazon calculate star ratings?