Material: Hainan Golden Tan

Specifications:

12MM-17 Pieces (within a circumference of about 16.5cm) ------ lean for girls or teenagers

15MM-15 Pieces (within a circumference of about 17.5cm) ------ for adult men

18MM-13 Pieces (within a circumference of about 17.7cm) ------ for overweight / strong men

20MM-12 Pieces (within a circumference of about 18cm) ------ for higher fat men