Customer reviews

4.2 out of 5 stars
4.2 out of 5
3,571 customer ratings
5 star 67% (67%) 67%
4 star 10% (10%) 10%
3 star 7% (7%) 7%
2 star 4% (4%) 4%
1 star 12% (12%) 12%
How does Amazon calculate star ratings?