Size Chart

Xsmall 14-16 cm (Women's Standard Form)
Small 16-18 cm (Women Relax and Men Slim Form)
Medium 18-20 cm (Men's Standard Form)
Large 20-22 cm (Men Relax Form)
RING
US SIZE INSIDE (mm, inches) INT SIZE
7 54.3 mm 14
7.5 55.6 mm 15
8 57 mm 16
8.5 58.3 mm 17
9 59.3 mm 18
9.5 60.3 mm 19
10 62.1 mm 20
10.5 63.4 mm 22
11 64.5 mm (Men's Standard Form) 23

11.5 65.9 mm 24
12 67.2 mm 25
12.5 68.5 mm 26
13 69.7 mm 27