Customer reviews

3.9 out of 5 stars
3.9 out of 5
51 customer ratings
5 star 40% (40%) 40%
4 star 25% (25%) 25%
3 star 25% (25%) 25%
2 star 5% (5%) 5%
1 star 5% (5%) 5%
How does Amazon calculate star ratings?