Customer reviews

4.1 out of 5 stars
4.1 out of 5
11 customer ratings
5 star 44% (44%) 44%
4 star 31% (31%) 31%
3 star 13% (13%) 13%
2 star 12% (12%) 12%
1 star 0% (0%) 0%
How does Amazon calculate star ratings?