Customer reviews

2.9 out of 5 stars
2.9 out of 5
16 customer ratings
5 star 21% (21%) 21%
4 star 14% (14%) 14%
3 star 20% (20%) 20%
2 star 23% (23%) 23%
1 star 22% (22%) 22%
How does Amazon calculate star ratings?