Customer reviews

4.5 out of 5 stars
4.5 out of 5
22 customer ratings
5 star 77% (77%) 77%
4 star 11% (11%) 11%
3 star 0% (0%) 0%
2 star 6% (6%) 6%
1 star 6% (6%) 6%
How does Amazon calculate star ratings?