Customer reviews

3.9 out of 5 stars
3.9 out of 5
668 customer ratings
5 star 48% (48%) 48%
4 star 18% (18%) 18%
3 star 16% (16%) 16%
2 star 10% (10%) 10%
1 star 9% (9%) 9%
How does Amazon calculate star ratings?