Customer reviews

4.2 out of 5 stars
4.2 out of 5
136 customer ratings
5 star 66% (66%) 66%
4 star 10% (10%) 10%
3 star 11% (11%) 11%
2 star 4% (4%) 4%
1 star 9% (9%) 9%
How does Amazon calculate star ratings?