Customer reviews

4.4 out of 5 stars
4.4 out of 5
635 customer ratings
5 star 67% (67%) 67%
4 star 16% (16%) 16%
3 star 11% (11%) 11%
2 star 2% (2%) 2%
1 star 5% (5%) 5%
How does Amazon calculate star ratings?