Customer reviews

3.9 out of 5 stars
3.9 out of 5
20 customer ratings
5 star 62% (62%) 62%
4 star 9% (9%) 9%
3 star 12% (12%) 12%
2 star 0% (0%) 0%
1 star 18% (18%) 18%
How does Amazon calculate star ratings?