Customer reviews

3.2 out of 5 stars
3.2 out of 5
4 customer ratings
5 star 26% (26%) 26%
4 star 24% (24%) 24%
3 star 23% (23%) 23%
2 star 0% (0%) 0%
1 star 26% (26%) 26%
How does Amazon calculate star ratings?