Size Chart

Ring Size Circumference (mm)
15 47–48 mm
15.5 48–49 mm
16 49–50 mm
16.5 50–52 mm
17 52–53 mm
17.5 53–55 mm
18 55–56 mm
18.5 56–58 mm
19 58–59 mm
19.5 59–60 mm
20 61–63 mm
20.5 63–65 mm
21 65–67 mm
21.5 67–68 mm
22 69–70 mm