Customer reviews

4.1 out of 5 stars
4.1 out of 5
2,159 customer ratings
5 star 66% (66%) 66%
4 star 11% (11%) 11%
3 star 6% (6%) 6%
2 star 6% (6%) 6%
1 star 11% (11%) 11%
How does Amazon calculate star ratings?