Customer reviews

4.2 out of 5 stars
4.2 out of 5
173 customer ratings
5 star 66% (66%) 66%
4 star 13% (13%) 13%
3 star 8% (8%) 8%
2 star 2% (2%) 2%
1 star 10% (10%) 10%
How does Amazon calculate star ratings?