Customer reviews

3.5 out of 5 stars
3.5 out of 5
11 customer ratings
5 star 33% (33%) 33%
4 star 13% (13%) 13%
3 star 33% (33%) 33%
2 star 11% (11%) 11%
1 star 10% (10%) 10%
How does Amazon calculate star ratings?