Customer reviews

4.2 out of 5 stars
4.2 out of 5
11,136 customer ratings
5 star 63% (63%) 63%
4 star 15% (15%) 15%
3 star 9% (9%) 9%
2 star 5% (5%) 5%
1 star 8% (8%) 8%
How does Amazon calculate star ratings?