Customer reviews

4.4 out of 5 stars
4.4 out of 5
539 customer ratings
5 star 70% (70%) 70%
4 star 14% (14%) 14%
3 star 7% (7%) 7%
2 star 3% (3%) 3%
1 star 5% (5%) 5%
How does Amazon calculate star ratings?