Customer reviews

4.1 out of 5 stars
4.1 out of 5
23 customer ratings
5 star 51% (51%) 51%
4 star 31% (31%) 31%
3 star 0% (0%) 0%
2 star 18% (18%) 18%
1 star 0% (0%) 0%
How does Amazon calculate star ratings?