Customer reviews

4.4 out of 5 stars
4.4 out of 5
21 customer ratings
5 star 71% (71%) 71%
4 star 15% (15%) 15%
3 star 7% (7%) 7%
2 star 0% (0%) 0%
1 star 7% (7%) 7%
How does Amazon calculate star ratings?