Customer reviews

4.3 out of 5 stars
4.3 out of 5
5 customer ratings
5 star 54% (54%) 54%
4 star 24% (24%) 24%
3 star 22% (22%) 22%
2 star 0% (0%) 0%
1 star 0% (0%) 0%
How does Amazon calculate star ratings?