Sizing Chart Ring
| Size | Inside Circumference |
| D | 41 1/2mm |
| D 1/2 | 42mm |
| E | 42 3/4mm |
| E 1/2 | 43mm |
| F | 44mm |
| F 1/2 | 44 1/2mm |
| G | 45 1/4mm |
| G 1/2 | 45 3/4mm |
| H | 46 1/2mm |
| H 1/2 | 47mm |
| I | 47 3/4mm |
| I 1/2 | 48mm |
| J | 49mm |
| J 1/2 | 49 1/2mm |
| K | 50mm |
| K 1/2 | 50 3/4mm |
| L | 51 1/2mm |
| L 1/2 | 52mm |
| M | 52 3/4mm |
| M 1/2 | 53mm |
| N | 54mm |
| N 1/2 | 54 1/2mm |
| O | 55 1/4mm |
| O 1/2 | 55 1/2mm |
| P | 56mm |
| P 1/2 | 57mm |
| Q | 57 3/4mm |
| Q 1/2 | 58 1/4mm |
| R | 59mm |
| R 1/2 | 59 3/4mm |
| S | 60mm |
| S 1/2 | 60 3/4mm |
| T | 61 1/4mm |
| T 1/2 | 62mm |
| U | 62 1/2mm |
| U 1/2 | 63mm |
| V | 63 3/4mm |
| V 1/2 | 64 1/2mm |
| W | 65mm |
| W 1/2 | 65 1/2mm |
| X | 66 1/4mm |
| X 1/2 | 67mm |
| Y | 67 1/2mm |
| Y 1/2 | 68mm |
| Z | 68 3/4mm |
| Z 1/2 | 69 1/2mm |