Customer reviews

4.2 out of 5 stars
4.2 out of 5
1,257 customer ratings
5 star 60% (60%) 60%
4 star 16% (16%) 16%
3 star 10% (10%) 10%
2 star 8% (8%) 8%
1 star 5% (5%) 5%
How does Amazon calculate star ratings?