Customer reviews

4.7 out of 5 stars
4.7 out of 5
40 customer ratings
5 star 78% (78%) 78%
4 star 16% (16%) 16%
3 star 0% (0%) 0%
2 star 6% (6%) 6%
1 star 0% (0%) 0%
How does Amazon calculate star ratings?