Customer reviews

3.8 out of 5 stars
3.8 out of 5
21 customer ratings
5 star 51% (51%) 51%
4 star 15% (15%) 15%
3 star 11% (11%) 11%
2 star 8% (8%) 8%
1 star 16% (16%) 16%
How does Amazon calculate star ratings?