Customer reviews

3.7 out of 5 stars
3.7 out of 5
6 customer ratings
5 star 29% (29%) 29%
4 star 29% (29%) 29%
3 star 21% (21%) 21%
2 star 21% (21%) 21%
1 star 0% (0%) 0%
How does Amazon calculate star ratings?