Customer reviews

4.1 out of 5 stars
4.1 out of 5
18 customer ratings
5 star 47% (47%) 47%
4 star 31% (31%) 31%
3 star 8% (8%) 8%
2 star 14% (14%) 14%
1 star 0% (0%) 0%
How does Amazon calculate star ratings?