Customer reviews

4.2 out of 5 stars
4.2 out of 5
239 customer ratings
5 star 66% (66%) 66%
4 star 9% (9%) 9%
3 star 10% (10%) 10%
2 star 6% (6%) 6%
1 star 9% (9%) 9%
How does Amazon calculate star ratings?