Customer reviews

4.4 out of 5 stars
4.4 out of 5
1,678 customer ratings
5 star 72% (72%) 72%
4 star 12% (12%) 12%
3 star 6% (6%) 6%
2 star 4% (4%) 4%
1 star 6% (6%) 6%
How does Amazon calculate star ratings?