Customer reviews

3.9 out of 5 stars
3.9 out of 5
13 customer ratings
5 star 67% (67%) 67%
4 star 0% (0%) 0%
3 star 10% (10%) 10%
2 star 0% (0%) 0%
1 star 22% (22%) 22%
How does Amazon calculate star ratings?