Customer reviews

3.9 out of 5 stars
3.9 out of 5
18 customer ratings
5 star 40% (40%) 40%
4 star 21% (21%) 21%
3 star 25% (25%) 25%
2 star 14% (14%) 14%
1 star 0% (0%) 0%
How does Amazon calculate star ratings?