Customer reviews

3.9 out of 5 stars
3.9 out of 5
4 customer ratings
5 star 47% (47%) 47%
4 star 24% (24%) 24%
3 star 0% (0%) 0%
2 star 30% (30%) 30%
1 star 0% (0%) 0%
How does Amazon calculate star ratings?