Customer reviews

3.6 out of 5 stars
3.6 out of 5
4 customer ratings
5 star 30% (30%) 30%
4 star 0% (0%) 0%
3 star 70% (70%) 70%
2 star 0% (0%) 0%
1 star 0% (0%) 0%
How does Amazon calculate star ratings?