Customer reviews

4.1 out of 5 stars
4.1 out of 5
11 customer ratings
5 star 50% (50%) 50%
4 star 19% (19%) 19%
3 star 20% (20%) 20%
2 star 12% (12%) 12%
1 star 0% (0%) 0%
How does Amazon calculate star ratings?