Customer reviews

4.1 out of 5 stars
4.1 out of 5
18 customer ratings
5 star 54% (54%) 54%
4 star 25% (25%) 25%
3 star 9% (9%) 9%
2 star 0% (0%) 0%
1 star 12% (12%) 12%
How does Amazon calculate star ratings?