Customer reviews

3.9 out of 5 stars
3.9 out of 5
30 customer ratings
5 star 44% (44%) 44%
4 star 23% (23%) 23%
3 star 17% (17%) 17%
2 star 8% (8%) 8%
1 star 8% (8%) 8%
How does Amazon calculate star ratings?