Customer reviews

4.1 out of 5 stars
4.1 out of 5
189 customer ratings
5 star 54% (54%) 54%
4 star 20% (20%) 20%
3 star 12% (12%) 12%
2 star 7% (7%) 7%
1 star 7% (7%) 7%
How does Amazon calculate star ratings?