Customer reviews

3.7 out of 5 stars
3.7 out of 5
30 customer ratings
5 star 52% (52%) 52%
4 star 9% (9%) 9%
3 star 13% (13%) 13%
2 star 10% (10%) 10%
1 star 15% (15%) 15%
How does Amazon calculate star ratings?