Customer reviews

4.5 out of 5 stars
4.5 out of 5
5,427 customer ratings
5 star 78% (78%) 78%
4 star 10% (10%) 10%
3 star 5% (5%) 5%
2 star 3% (3%) 3%
1 star 5% (5%) 5%
How does Amazon calculate star ratings?