Customer reviews

4.2 out of 5 stars
4.2 out of 5
19 customer ratings
5 star 63% (63%) 63%
4 star 8% (8%) 8%
3 star 10% (10%) 10%
2 star 19% (19%) 19%
1 star 0% (0%) 0%
How does Amazon calculate star ratings?